spirent.cn
Posts Tagged "GPS modernization"

An important part of the current GPS modernization program, M-code is the name given to a new signal that is designed to improve both the security and anti-jamming properties of military navigation using GPS. Importantly, the M-code is designed to be autonomous, and so users will be able to calculate their positions using only the M-code signal (unlike the existing military P(Y) code, which also requires use of the C/A code). Radically, in addition to the normal wide-angle broadcast, t...

Read full post 0 Comments

L2C is the name given to one of the new signals to be broadcast from the satellites in the modernised GPS constellation. This new signal is intended for civilian use (hence the “C”), and will be broadcast on the L2 frequency at 1227.6MHz by all satellites from block IIR-M onwards. The L2C signal is one of the key means by which the modernized GPS will offer improved accuracy and availability for civilian applications based on dual-frequency receivers. Not only is the signal intended to...

Read full post 0 Comments

In addition to the new signals to be broadcast under the GPS modernization project, there are to be two significant changes to the existing civilian signals, both designed to improve the performance of GPS receivers. The first is an additional data-free pilot signal and the second is the addition of forward error correction (FEC) encoding to the navigation message. The new data-free signal will be broadcast alongside the normal data signal, acting as an easy-to-acquire pilot signal. On...

Read full post 0 Comments
× Spirent.com uses cookies to enhance and streamline your experience. By continuing to browse our site, you are agreeing to the use of cookies. If you would like to learn more about how we use cookies