Report On Military Applications Of Gnss Information Technology Essay

Report On Military Applications Of Gnss Information Technology Essay Recent years have witnessed an increasingly use of GNSS technologies in diverse areas of human endeavours. Governments, organisations, individuals etc. are beginning to rely upon GNSS technology in finding solutions to problems in different fields of life (Spirent, 2002: 17). One obvious area where GNSS technology has been deployed successfully since the launching of satellite navigation is in military applications. Military applications of GNSS date back in 1978 when the first Global Positioning System was launched by US Department of Defence. Since then, many GNSS and associated navigation systems are being used in military mission fields. This report examines past and present military applications of GNSS; it also attempts to look into future of military applications in the context of emerging trends and developments in GNSS world. 1.2 Global Navigation Satellite Systems (GNSS) Global Navigation Satellite Systems (GNSS) is generic term encompassing all satellite navigation systems that allows users to determine their locations by observing radio signals transmitted by GNSS satellites. First among them is the US Navigation by Satellite Ranging and Timing (NAVSTAR) Global Positioning System (GPS). Russian Global Navigation Satellites System (GLONASS) is the second generation of GNSS, conceived also as a military system.. The next generation of GNSS is the European Unions Galileo which is expected to be in full operation by early 2014. GNSS market is poised for revolution with the full deployment of Galileo constellation of satellites. Other Regional GNSS include Beidou operated by China, although through its Compass, China has planned to launch satellite navigation system with global coverage. Indian Regional Navigation Satellite System (IRNSS) is another GNSS in the development. Uncertainty still trail IRNSS project since India entered into partnership with Russian GLONASS. QZSS is another regional navigation system operated by Japan. It is developed to supplement GPS signals in Japan and neighbouring areas. Besides these, there are other regional GNSS space-based augmentation systems aim to improve the performance of GPS/GLONASS. The major regional augmentation systems are WAAS, EGNOS (European Geostationary National Overlay Service), MTSAT-Based Satellite Augmentation System (MSAS) in Japan and Indian GPS Aided Geo Augmented Navigation (GAGAN) GPS and GLONASS stand out among the list when it comes to military applications. GPS and GLONASS have been used in many military operations. 1.3 Global Positioning Systems (GPS) US Global Positioning System (GPS) was designed as a dual-use technology (civilian and military use). The positioning service available to civil users is called Standard Positioning Service, while that of the military is called Precise Positioning Service. GPSs Precise Positioning Service (PPS) is used for most military applications. Precise Positioning Service is restricted to only US military, NATO forces, and other users licensed by US Government. The encrypted precise code signals P(Y) and M-code are used for military applications. M- Code is a new signal being to realise the fundamental aim of achieving precise and accurate navigation services for military applications. These signals are broadcasted in link 1 (L1) and link 2 (L2) bands. L1C-d and L1C-p signals will be added to the PPS users under the GPS phased modernisation programme (Groves, 2008: 12). In times of navigation data messages, MNAV message broadcasts are broadcast on M-code signals. GPS is presently undergoing p hased restructuring and modernisation and it is expected that new programme will ensure that existing users are transmitted P(Y) code while the new users are transmitted new M code (Kaplan and Hegarty (2006: 654). 1.4. GLONASS Like GPS, GLONASS was conceived as a military system but designed to offer both military and civil positioning service (Groves 2008: 17). GLONASS P code signals are used for military applications and transmitted in both bands LI and L2 with frequencies 1592.95MHz 1613.86MHz and 1237.83 MHz 1256MHz respectively (Groves, 2008: 19). GLONASS K, fully modernised satellites are set to broadcast new signals that will improve the accuracy of military operations. 2.0 GNSS Positioning Requirements: The positioning principles are basically the same for GNSS systems. Generally, a GNSS receiver records three or more satellites signals to determine a 2 dimensional coordinates, while four or more signals are needed for 3 dimensional coordinates. The accuracy of GNSS position solution depends on the type of GNSS device used and application under consideration. Accuracy: Accuracy is a critical factor in military applications. GPS was launched because of the military requirements for high accurate global navigation (Len, 2007:185). In case of timing service, military operations require precise time transfer for synchronization of equipment and various operations (Len 2007: 184). The GPS PPS offers horizontal accuracy of 1.2m and vertical accuracy of 1.9m based on 24 satellite constellations (Groves, 2008). With its modernisation program, GLONASS is set to compete with GPS as it planned to achieve the same positioning accuracy with GPS. The Galileo Public-Regulated Service (PRS) has a lower accuracy when compared to that of GPS PPS; it has horizontal accuracy of 3m and vertical accuracy of 6m, much more lower to its Open Service (Groves, 2008: 20) Availability: Availability is also of the important characteristics of GNSS performance. Availability of navigation system is defined by US Federal Radionavigation Plan (FRP) as the percentage of time that the services of the system are within the required performance limits (Wang et al 2006: 1). Global availability of GNSS for military applications is expected to increase with the ongoing modernisation of GLONASS. GLONASS K satellites when fully launched will improve the accuracy of P code for military applications. India has partnered with Russia in the GLONASS project, and it is expected that India and other countries will have access GLONASS military signals for their mission operations and equipment testing. Aside from GPS military signals, more countries are today using civil signals in many military missions and equipment testing. Integrity: GPS will have full integrity monitoring and alert system as the fourth segment when the modernisation programme is completed. GLONASS K satellites will broadcast integrity information and differential corrections in L3 band. Similarly, Galileo will broadcast integrity alerts and some differential corrections. 2.1 GNSS Markets GNSS technology is naturally divided into two broad markets/applications civil / commercial markets and military markets. The user equipment used in military applications can be classified into two types: (i) GNSS receivers operated by human beings such as handheld type, human operated receivers on ships, aircrafts and vehicles (Len, 2007: 184 -185) (ii) Autonomous receivers these are not dependent of any human operation and usually integrated with inertial sensors. They are used in guided missile programs and newer military applications. Comparison between Military and Civil Receivers Military Civil Frequencies L1, L2 L1 and /or L1, L2 (L5 on 11F satellites Codes P(Y), M, C/A, C C/A and C (on modernised satellites Size/weight/power Card, handheld, receiver unit Chips, handheld, receiver unit Navigation accuracy 1m to 5m 5m to 10m Anti interference Greater than 54 dB Usually not more than 24 dB Integration A/J antennas, communications, inertial sensors Speed/heading sensors, communications, GIS, inertial sensors Adapted from (Len 2007: 183) 3.0 Military Applications of GNSS Of all GNSS, GPS has been most widely used in military applications. Essentially, GPS was developed to satisfy military requirements for a global positioning, navigation and timing service. (Kaplan, and Hegarty, 2006: 654). Military application of GPS started in late 1970s when GPS was used for weapon testing in the then US Navy Submarine Launched Ballistic Program (SLBM). GPS was used to track the Submarine Launched Ballistic Missiles from a ship as the missile travelled down the Atlantic (Len, 2007: 174). The GPS military equipment used for the missile testing then made use of translator. Subsequently, other weapon testing was conducted in the air and ground vehicles (Len, 2007: 177). Today, GPS can be deployed to variety of military applications. Some of these include: target acquisition; missile guidance, search and rescue; coordinate bombing; precision survey, instrument approach; antisubmarine warfare; range instrumentation; remotely piloted vehicle operations; barebase operati ons; close air support; en route navigation; command and control; field artillery and shore bombardment; rendezvous, sensor emplacement etc. (Len, 2007: 177 -178). Other military applications of GNSS include mine location, enemy radar location, Special Forces intelligence gathering etc (Dye and Baylin, 1997: 82). 3.1 GNSS/ Inertial Integration Systems: GNSS such as GPS has been proved to be weak in term of providing high quality and reliable position solution (Spirent, 2010). Thus inertial sensors are being used in many applications to complement GNSS. Inertial navigation system is a small, self contained device that uses inertial sensors (accelerometers and gyroscopes) to calculate position and velocity solution of a moving object (Logsdon, 1995: 39). It makes use of dead reckoning navigation system (Groves 2008: 7). Using GPS measurements, INS navigation solution is calibrated and corrected via integration algorithm (Groves and Long, 2005: 2). GPS/INS integration is popular in the guided weapons and unmanned air vehicles (UAVs) where low cost sensors are used (Groves and Long, 2005: 2). INS function independently of GNSS signals susceptible to jamming, interference, enemy manipulation and other distortions and are therefore used in many military applications (Dye and Baylin, 1997: 13). Examples of practical applications of GNSS/ INS based solutions are given in the report. Advantages of GNSS/INS based solution: INS offers continuous navigation operations; it provides high-bandwidth output (50 Hz) and low short-term noise; it also provides attitude, angular rate, and acceleration measurements as well as position and velocity (Groves and Long 2005: 419) (Groves 2008: 8). GPS provides a high accuracy which does not drift with time(Groves and Long, 2005: 419) Disadvantages of GNSS/INS based solution: The accuracy of INS output is degraded with time thus necessitating the need to calibrate the errors (Groves 2008: 8). Unlike INS, GNSS has lower bandwidth (1Hz), more noisier than that INS and does not usually include altitude (Groves and Long 2005: 419, 420) One obvious challenge in the military use of GNSS is issue of deliberate jamming and interference by the enemies. GPS receivers have been found to be susceptible to jamming due to low signal power of GPS signal. This trend has raised a concern to US Department of Defence in the recent years thus signalling the programme of developing various anti-jamming techniques to mitigate these effects. Recent anti jamming technologies include nulling of antennas and ultra tight coupling of the GPS and the inertial sensors (Kaplan, and Hegarty (2006: 656). 3.2 Practical Applications of GPS in Precision Guidance In 1991, US army and its allies successfully deployed GPS in the attack to rescue oil rich Kuwait after its invasion by Iraq in an operation tagged Operation Desert Storm. GPS receivers were fitted in the military aircrafts and helicopters, bombs were dropped from these aircrafts as targeted thus eliminating unwanted casualties. GPS receivers were used to know the coordinates of the targets so that the weapons can be delivered accurately. In 1995, GPS was also deployed during the Bosnia war by the combined US and NATO forces in a campaign tagged Operation Deliberate Force. Military aircrafts operating from their base in Italy were fully equipped with GPS equipment in the strike against the Bosnia Serb forces. Perhaps, the Joint Direct Attack Munition (JDAM) is the most impressive breakthrough GPS has achieved in area of precision guidance. JDAM is an independent, tail kit with gravity bomb; it is usually mounted on the military fighter jets and uses GPS/INS guidance to deliver the target (Cozzens, 2006). JDAM has the capability of working in all weather conditions and its accuracy is not dependent on the altitude (Cozzens, 2006). JDAM recorded 9.6m accuracy during their testing. JDAM have been successfully deployed in many operations. For example, in June 2006, US Air Force successfully used GBU-38 Joint Direct Attack Munition equipped with GPS precision guidance to kill former Iraq terrorist leader Abu Musab al Zarqawi in his house (Cozzens, 2006). Once on the air, GPS/INS guidance enables the gravity bomb to be delivered accurately at the targets (Cozzens, 2006). In case of GLONASS, Russian military has deployed GLONASS military signals in many missions (Len, 2007: 189). Russian Federation Airforce recently developed latest KAB family of weapons called KAB 500S. KAB 500S is a guided bomb similar to that of US JDAM. KAB 500S can be dropped from aircraft at altitudes of 500 to 10,000 metres and airspeeds of 550 to 1,100 kilometres per hour (Deagel, 2007). It uses GLONASS Military code and INS to strike the targets (Len, 2007: 189). The third generation GNSS, Galileo has encrypted signal Public Regulated Service that may be used for military applications in the near future. 4.0 GNSS Future and Military Applications: The GNSS have made giant strides in military applications particularly in area of guided weaponry and smart bombs. GPS-aided munitions, ranging from artillery shells to smart shells have proved to be a reliable technology in recent time in times of accuracy (Lucio, (2002), (Wells, (2001). Countries all over the world will continue to embrace these technologies as cheaper GPS/INS coupled munitions are being produced to meet the requirements for accurate, precise timing and navigation solutions in the land, air and sea in near future. Current developments in GNSS industry like new signals and constellations acquisition will usher new era of high accurate military based satellite navigation. The separation of GPS signals for military and civilian use will lessen the effects of jamming and interference in military operations coupled with high signal power of new M code. GPS new military code will improve the anti-jamming capability of the system as current modernisation programme will make it autonomous. Non coherence integration of the acquisition circuit of the new military code will enhance the performance of the system in the presence of noise and jamming (Betz et al, 2005: 45, 46). In the area of system integrity, modernization programme of GPS and GLONASS will offer users more reliable measurements as they will have options to validate GNSS measurements. Presently, only GPS and GLONASS are used for military applications. I look at future where GNSS will be more available for military applications. More countries will be authorised to have access to GPS P(Y) code in near future and others will want develop their own SBASs. For example, Nigeria has developed its own SBAS called NIGCOMSAT with coverage only in Nigeria for now. Modernised GPS civil signals will continue to be used by countries not authorised to use P(Y) code. Only, recently, Russian Government announced that GLONASS military signals will be freely made available to any country that want to use them. Already, India and Russian have agreed to collaborate on GLONASS project (Len, 2007: 190). It is expected that more Countries will enter into agreements with Russian when GLONASS constellation of satellites are fully deployed in the orbit. China is making steady progress on its Compass project and is poised to use the system to strengthen its national security. Finally, GNSS industry is geared for revolution when Galileo is fully operationalised in next few years. Galileo has an encrypted signal PRS which has potentials for military applications. It is already been speculated that this may be used for military applications in the near future, although Galileo is purely conceived as a civilian system.

CACHE Early Years Education And Care Essay

1.1 and 1.2: Physical care needs for children in relation to nappy changing, would be keeping children clean and dry, by changing soiled nappies as soon as possible. Making sure to wear an apron and gloves, use the right sized nappy and by using the appropriate wipes and creams (if needed). Toilet training routine care needs would be asking children to go to the toilet at regular intervals. Learning to wipe, clean them selves up and to flush. Making sure they wash and dry their hands after use of toilet. Washing and bath time care needs would be to make sure water is not to hot or cold. Seeing that hands, face and body are thoroughly cleaned with appropriate soap and either sponge or flannel. Skin care would include making sure it is clean. Seeing that the right creams and ointments are used for cuts, sores and certain skin conditions (eczema, psoriasis etc). Having noses wiped, and tissues then being put into a bin and making sure coughs and sneezes are covered then washing hands af ter. Teeth care is to make sure that teeth are brushed at least twice a day with a suitable toothbrush and toothpaste that is appropriate for each age group and needs of each child. Hair care includes having hair washed with a suitable shampoo and conditioner ( if conditioner is needed). Having hair brushed everyday at least once. Making sure hair is cut and maintained regularly (checked for head lice etc). Mealtime care routines differ between ages of children. Babies would require temperature-controlled formula in a sterilised bottle around every 3-4 hours, with them being winded during and after each feed. Toddlers would require food easy to chew (blended or soft foods), at least 3 times a day with plenty of fluids in between. Young children would eat a variety of normal foods, and would learn how to eat with a fork, knife and spoon etc. They would be taught to wash hands before eating and to sit appropriately at a table. The children would be encouraged to ask for more should they want it and help themselves to pouring drinks etc. 1.3: Non- routine physical care would be required if a child was to have an accident, e.g. wet or soiled themselves, fall over or split something which  needed cleaning or clothes changing. Other non-routine care would be if a child was to become ill e.g. be sick, has an allergic reaction etc. 1.4: Benefits in working in partnership with parents/carers is the information received for each individual child and creates a good relationship which builds confidence for everyone.. Parents can learn from you and you can learn from parents. For example knowing which child has allergies or certain medical conditions. Which child takes medication or has behavioural issues. Also to find out if there are any cultural issues or language barriers. Children can be different at home/school therefore there is a need to work together to reduce this effect, by working together can help with synchronising routines, e.g. no good doing something one way at home and another way at setting. Having care plans set in place for each child and having all issues, needs and likings/dislikings for each child can be maintained and can continue at home during holidays, weekends etc. Good working partnership helps parents feel empowered and not excluded from treatment plans etc. Unit 1.3 Y/505/9283 Support physical care routines for children 2.1: Hygienic practice to sterilising equipment is to make sure ands and surface areas around sterilised equipment are washed. Then make sure all feeding and preparation equipment is washed in hot soapy water. Use bottle/teat brushes to clean and make sure all previous feed is removed from inside and outside of bottles/teats, then rinse all under tap once cleaned. If using a commercial steriliser then you would need to follow the manufactures instructions. If boiling then make sure all bottles, teats etc are fully submerged with no air bubbles. Cover and boil at least for 10mins. It is best to remove equipment. Hygienic practice for preparing formula feeds is to clean hands and all surfaces before preparation. It is best to make up feeds just before use. Use fresh boiled water and then leave to cool. Once cooled, use the exact amount of formula as instructed then re-assemble bottle. Shake bottle making sure everything well mixed. Holding under tap or put in container cool formula to right feeding temperature. Always check temperature of feed on the inside of wrist by squirting a few  drops, before giving it to baby. Always discard any left over feed after 2hours. 2.2: There are all varieties of formula milk, so they should be used in accordance to the needs of each child, as certain children may need a different formula to another child. Using the wrong formula, adding to much/little or not having the feed, at the right temp can affect the health of babies. If the feed has been left or stored to long it can cause the growth of bacteria. If the person or surrounding areas have not been washed/cleaned thoroughly that can also cause bacteria growth, and bacteria transfer onto sterilised equipment. If equipment has not been cleaned or sterilised properly then that can also cause bacteria to grow and not be eliminated. Unit 1.3 Y/505/9283 Support physical care routines for children 3.1: The role of an early years practitioner in relation to hand washing would be to make sure hands are washed thoroughly before preparing meals/snacks times and also afterwards. Hands should also be washed after changing and toileting. In relation to food hygiene hands must always be washed, then put on gloves and apron before handling/preparing foods. Food should stored in the correct tubs etc and at the right temperature. Food preparation areas should be cleaned thoroughly and different equipment should be used for different food types, to stop cross-contamination. Spillages should be cleaned up straight away to prevent accidents, staining and contamination etc, with the appropriate equipment (cloths, paper towels, mops). All waste should be disposed into the right bins, bags etc and then removed into an outdoor bin at the end of each day. When preparing foods, changing children, cleaning spillages and disposing of waste, an early years practitioner should always make sure hands have been washed before and after. They should always wear an apron and gloves where appropriate. Unit 1.3 Y/505/9283 Support physical care routines for children 5.1: Rest and sleep needs differ from each child and each age group. For  example a 6-week-old baby will usually require around 15-16 hours per day. Most of these would be during the night and baby would probably be having around 3-4 naps per day. At 6 weeks, a baby will more than likely still be waking for feeds during the night. At 7 months a baby would be falling into a sleep pattern of around 11 hours each night, with around 2 naps during the day consisting of around 1-2 hours each. Most 7 month olds would be sleeping through the night. When it comes to children of 15 months old, sleep patterns change again. Most 15 month olds will be sleeping through the night for around 13 hours. They will need 1 nap during the day or 2 quick rest naps. These sleep patterns will usually stay the same till around the age of 3 years. Sleep and rest patterns for children aged 4-5 years would be around 10-12 hours a night without day naps. By the age of 6-7 years children would have around 8-10 hours a night also without daytime naps. All children will rest and sleep better if they have the same routine nap an bedtime each day/night. The sooner a child gets into a routine the better it can be for them settling. 5.2: Sudden Infant Death Syndrome (SIDS) is the sudden and unexplained death of a baby, where no cause is found. While SIDS is rare, it can still occur and there are steps parents and take to help reduce the risks. Things you can do would be to always place your baby on their back to sleep. Keep your baby smoke free during and after birth. Have covers no higher than baby’s shoulders and tuck them in. Have baby sleep in your room for the first 6 months in a cot, crib or moses basket. Use a firm, flat and waterproof mattress in good condition and place baby in â€Å"feet to foot† position. The things to avoid would be to never sleep in a chair or on a sofa with your baby. Don’t sleep in the same bed as your baby, if you smoke or have been drinking or taking drugs etc. Don’t let your baby get to hot or cold and don’t use loose coverings. Unit 1.3 Y/505/9283 Support physical care routines for children N1: 6.1: Measles is a highly infectious viral illness that can be very unpleasant and can sometimes lead to serious complications that can sometimes be fatal.  These include bacterial infection in the lungs (pneumonia) and the brain (encephalitis). Measles is caused by a virus spread in droplets and is very easy to be caught by those who have not been vaccinated. Typical symptoms of measles include fever, cough, conjunctivitis and a rash. Complications are even quite common in healthy people, and about 20% of reported measles cases experience one or more complication. Most people who are at risk of developing serious complications are babies younger than 12 months, children in poor health, teenagers and adults. 6.2: The first MMR vaccinations are usually given when your child is about 13 months old. A second is usually given before your child starts school. Adults and 6-13 month old children can also have the MMR vaccine if they are at risk of catching measles, if there is an outbreak of measles in your local area, or if you have been in close contact with someone who has measles. 6.3: There are parents who decide against having their children immunised, for a variety of reasons. For example some cultures or religions do not like or believe in having immunisations. Most go against immunisation because of a published document by a Dr Wakefield, claiming that the MMR vaccine is linked to Autism. Even though Dr Wakefield’s study were found to be faked, some parents still don’t want their children to receive the MMR vaccine. Unit 1.3 Y/505/9283 Support physical care routines for children 7.1: Supporting children in physical care routines in relation to toileting, would be to have potties and toilet seats. To encourage children to use the toilet and to wash, dry and flush after toilet use. Have posters or pictures cards of actions which the children could follow,(like 1,2,3 steps Wipe,Flush,Wash,Dry etc.) on the walls or cubicle doors. In relation to washing, all children are encouraged to wash and dry their hands after toilet use, before meals/snack times and after doing certain activities (painting, sticking etc). Mealtime children are encouraged to get their own plates, cups etc, to have their hands washed and an apron on. They are also encouraged to feed themselves with the use of cutlery (if of appropriate age). Unit 1.3 question answers, 1.1, 1.2 and 5.1 also relate to the above. Unit 2.1 K/505/9286 An introduction to the role of the early years practitioner 2.1: People communicate to express needs, emotions and to share ideas. They also communicate to express feelings and to socialise. You also need to communicate to share experiences and to ask questions or to complain about things. Communication is also good for helping others to understand things. People communicate to establish and maintain relationships with others. Communication also helps with receiving and giving instructions and for getting information. It helps to share opinions and give encouragement. There are different ways of communicating either orally, hand signing or even written. Looking at body language is also a use of communication. 2.2: Communication is essential for carer to meet the needs of each individual child and their families. Communicating clearly and openly with other members of staff, the manager so as to make sure that the best possible care is provided and that this is done so reliably. This will help build your relationship and trust with colleagues and develop your role and theirs within the workplace. It ensures any health and safety or any other issues are recognised and reported accordingly, keeping others informed of current situations. It is also vital so parents and agencies/professionals, can inform or instruct their needs and issues with the carer or establishment of a child. Communication between a practitioner and child, is essential to build the childs confidence and helps promote good behaviour. Being a positive role model in the setting is vital to bond relationships to interact with others, helping the child to settle better and have an effective developments in all areas. Having good communication with parents also helps build a successful relationship with their child which then helps parents begin to have confidence and trust in us, that we can take care of their child. It is very important to have good communication with other agencies like Social Workers, Speech and Language/Therapist or other professionals who are involved in providing and  dealing with all childrens needs, to work together as part of a team, with consistency in their work. This helps by each individual knowing where they stand and where they need to progress further in helping to meet the needs of each child and their families.

Moving West And Beyond How The Corps Of Discovery Shaped...

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Essay on Harmful Effects Of Smoking Cigarettes - 1247 Words

Harmful Effects Of Smoking Cigarettes Mentioned Photos Not Included There are numerous effects of smoking Cigarettes that affect the individual. They can affect not only your health but also your social and family life. It can also affect the non-smoker around you. Non-smokers suffer from allergies, noise and eye irritations and headaches as a result of inhaling second hand smoke. Smoking while youre pregnant can result to the growth of the foetus and may even result in the death of the baby. Below are some long term and short term effects of smoking. Cigarette smoke contains around 4,000 chemicals, many of which are known to be highly poisonous and very harmful - over 40 are known to cause cancer. The chemicals found in a†¦show more content†¦These may be found in solvents, cleaning products or deodorizers. Short Term Effects - increased pulse rate - increased blood pressure - dulled sense of taste and smell - reduced appetite - reduced production of urine - watering of eyes - decreased blood flow to body extremities (fingers and toes) - possible dizziness and nausea due to increased carbon monoxide levels in the lungs and blood stream - temporary stimulation - reduction of brain and nervous system activity - smells - odor of smoke in hair, clothes etc... 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