Indian Regional Navigation Satellite System, IRNSS is expected to put into operation within a year. In April 4, 2014, the Indian Space Research Organization, ISRO using the polar satellite launch vehicle tested (Polar Satellite Launch Vehicle, PSLV) was successfully launched second satellites of the system IRNSS-IB. This is the twenty-fifth time the successful event of PSLV rocket. India regional navigation satellite system will consist of 7 satellites. However, in order to make the system operation, with 4 satellites in orbit is enough. First satellite IRNSS-1A India regional navigation satellite system was in 2013 July launch. According to the plan, the other two satellites will be launched in the second half of this year, so the system will be put into operation at the end of this year or early next year.

At present, the IRNSS-1B satellite has been sent to Sub-GTO, a few days later will eventually enter the east longitude 55 degrees to the 31 degree angle circular orbit around the earth.

India regional navigation satellite system is expected to provide two types of services, namely the Standard Positioning Service, SPS and limited service is only provided to the particular user (Restricted Service, RS), the latter is an encryption service. The design of India regional navigation satellite system lifetime is about 10 years. The system will provide services to accurate positioning information to 1500 kilometers around India and within the borders of the user. In the main service area, the positioning accuracy of India regional navigation satellite system is less than 20 meters. First satellite IRNSS-1A of the system has been launched into orbit in ten months, the performance test is satisfactory. Soon after, India space research organization will begin in orbit test and performance evaluation of IRNSS-1B satellite.

In recent years, along with the mobile phones provide multiple services for users, handheld navigation system has been popularized in India. The next few years, India is expected to domestic satellite based navigation tools will lead to greater demand. India regional navigation satellite system will be used in the vehicle tracking, ship management, land, air and sea navigation, widely application fields of mobile telephony integration and disaster management.

In the world, the most widely satellite navigation system is the global positioning system (GPS) America. Global positioning system has a long history, in 1978 put into use. However, until 1994, the global positioning system began provide global service. At present, the global positioning system is a satellite navigation systems at the top of the world. In fact, over the years, GPS has become synonymous with satellite navigation. Global positioning system can provide real-time positioning, in the global navigation and time service. Although the global positioning system is to provide free service to the user, we should remember that the system is in the control of American air force under. Global positioning system was built originally for military, safety system on the America plays an important strategic role. The system has 31 operating in the ground about 20200 km altitude in earth orbit satellite services, each satellite orbited the earth 2 times a day.

The former Soviet Union to enter the field of satellite navigation USA much later than. Russia's satellite navigation system called the "GLONASS" (GLONASS) system, the system was put into operation in 1995. However, due to funding problems, the system for many years can only realize some function, can not provide global coverage. From the beginning of 2011, restore full function operation state of the "GLONASS" system of Russian authorities. At present, the European Union and the European Space Agency (European Space Agency, ESA) is building a "Galileo" navigation system (Galileo), the system consists of about 30 satellites, is expected to complete the construction in 2020 and put into operation. "Galileo" project has experienced a long time delay, at present only 4 satellites launched, it is expected that the system will eventually be envisaged development.

The former Soviet Union entered the field of satellite navigation is much later than USA. Russia's satellite navigation system called the "GLONASS" (GLONASS) system, the system was put into operation in 1995. However, due to funding problems, the system for many years can only realize some function, can not provide global coverage. From the beginning of 2011, restore full function operation state of the "GLONASS" system of Russian authorities. At present, the European Union and the European Space Agency (European Space Agency, ESA) is building a "Galileo" navigation system (Galileo), the system consists of about 30 satellites, is expected to complete the construction in 2020 and put into operation. "Galileo" project has experienced a long time delay, at present only 4 satellites launched, it is expected that the system will eventually be envisaged development.
India the current construction of the satellite navigation system and other global navigation satellite system configuration is not the same. India demand for satellite navigation system is regional, so the current investment only for regional development which is composed of 7 satellites. In general, the navigation satellite will position in earth orbit. However, the 4 satellite India regional navigation satellite system will be positioned in the inclined geosynchronous orbit (IRNSS-1A and IRNSS-1B satellites already in this orbit), the rest 3 will be positioned in geostationary orbit.

Japan is under construction of regional satellite navigation system. First, Japan plans in the Quasi-Zenith Satellite System, QZSS is composed of 3 satellites of the regional system. However, in 2013 March, Japan's decision to the system launched 4 satellites, and will be constructed by the 7 satellites constellation as a future goal. Is expected to "quasi zenith satellite system" will be put into operation before 2017.

Whether now or in the future, the satellite navigation market will provide plenty of opportunities for the people. Market growth will provide important opportunities for value-added application of satellite navigation and positioning the market development. According to the estimation of some satellite navigation market reports and experts, the next ten years, the use of global satellite navigation system is expected to increase significantly. According to the forecast, to 2022, the satellite navigation market will increase to 250000000000 euros per year. The core revenue is expected to reach 100000000000 euros in 2019. The near future, the intelligent mobile phone new functions, integration and application software based on the satellite navigation market will be thoroughly reformed.

In a word, complete function of India regional navigation satellite system will help India to reduce global positioning system and "on the GLONASS system". These years, the global positioning system has been for users worldwide to provide deterioration signal (positioning accuracy of 36 meters). This kind of deterioration signal useless for the army. In the near future, with India regional navigation satellite system, India will be able to fully meet their strategic needs.

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