The Evolution of GPS

Posted on 22. Jul, 2011 by admin in Uncategorized

The GPS is evolving into a more robust system (GPS III), with greater availability and reduce the complexity of GPS augmentations. Some planned improvements include:

  • Adding a new signal on L2 for civilian use.
  • Adding a third civil signal (L5): 1176.45 MHz
  • Protection and availability of the two new signs for services Safety For Life (SOL).
  • Improved signal structure.
  • Increased signal strength (L5 will have a power level of -154 dB).
  • Improvement in accuracy (1 – 5 m).
  • Increased number of monitoring stations: 12 (twice)
  • Allow better interoperability with the L1 frequency of Galileo

The GPS III program aims to ensure that the GPS will meet military and civilian requirements planned for the next 30 years.This program is being developed to use an approach in 3 stages (stage of transition is the GPS II), very flexible, allowing future changes and reduce risks. The development of GPS II began in 2005 and the first of which will be available for launch in 2012, with the goal of complete transition GPS III in 2017. The challenges are:

  • Representing the requirements of users, both civil and military, in terms of GPS.
  • Limit GPS III requirements within the operational objectives.
  • Provide flexibility to allow future changes to meet user requirements until 2030.
  • Provide strength to the growing reliance on the positioning and precise time as international service.

The system has evolved and new systems have led him positioning IPS-2 refers to Inertial Positioning System, inertial positioning system, a data capture system, which allows the user to perform measurements in real time and in motion, called Mobile Mapping. This 3D mobile mapping system gets based on a device that includes a laser scanner, an inertial sensor, and an odometer GNSS system aboard a vehicle. They get great precision, thanks to three positioning technologies: GNSS + IMU + odometer, that working at the same time give the option of measuring even in areas where satellite signal is not good.

 

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