Design of pseudolite supplemented geolocation system for universal receiver

Global navigation satellite system (GNSS) has been widely used around the world, but problems like low signal intensity or signal been blocked could often cause the users unable to collect enough satellite signal for position purpose. A pseudolite geolocation system is designed which can worked instead of non-line-of-sight (NLOS) satellites, cooperate with on orbit GNSS satellites. We detailed a novel pseudolite system consists and working progress. Through application scenario analysis and simulation we verified that pseudorange errors is the main factor affect position accuracy, therefore, we provide pseudolite testing and correction methods. In addition, we also verified that pseudolite can significantly improve positioning accuracy in high buildings around urban environment.

I. Introduction

With the development of big data, Internet of things and 5G technology, driverless technology is more and more close to human life. Correspondingly, people need more accurate geolocationing support. As the high orbit of GNSS satellites provides a global coverage along with a great power lost, NLOS positioning at indoor and outdoor shielding regions is the focused and studied by reachers, especially positioning for dense vegetation or landslides blocked area (up to kilometers), which other geolocation system like Wi-Fi or mobile base station positioning technology could not worked well, pseudolite positioning system became the most effective way[1], [2]. For smart city, it can provide more accuracy location result, makes people's life more convenient.