One of the most important information required for destroying any traget through missiles or any air based system,

One of the most important information required for destroying any traget through missiles or any air based system, is the position coordinates of the target with very high accuracy. The Americans used to introduce errors in the their GPS signals so as to deteriorate the accuracy of the coordinates. This is specifically done during war situations. That was the reason, India took a decision to launch its own Satellite Navigation and positioning system, about 15 years back. This Indigenously developed Satellite system has been put in the orbit by ISRO, almost a decade ago. Earlier named as IRNSS and now known as Navic. It provides very precise coordinates of any point and is also being used for navigation, control and guidance. Other than American GPS System, there are Russian, Chinese and European navigation satellite systems.