Winfried Stock - Talk Title: Doppler Shift Based Opportunistic LEO-PNT With Starlink Signals скачать в хорошем качестве

Winfried Stock - Talk Title: Doppler Shift Based Opportunistic LEO-PNT With Starlink Signals

Abstract: Global Navigation Satellite Systems (GNSS) are fundamental to a wide range of applications, including industry, critical infrastructure, and military operations. In order to reduce the dependence on GNSS, great efforts have been made to investigate alternative Positioning, Navigation, and Timing (PNT) systems. The use of signals from Low Earth Orbit communications satellites as signals of opportunity for PNT (opportunistic LEO-PNT) is a promising approach for such an alternative PNT system. This talk provides estimates of the achievable positioning accuracy for different concepts by which communication signals can be exploited for opportunistic LEO-PNT. It presents a systematic analysis of the dominant error sources affecting the positioning accuracy of a standalone, static opportunistic LEO-PNT receiver performing multi-epoch Doppler shift measurements on Starlink signals. A computationally efficient algorithm for extracting these measurements from the synchronization sequence of Starlink broadband signals will be introduced.