Test results of HiSGR: A novel GNSS/INS ultra tight coupled spaceborne receiver

Abstract

With supporting of National Natural Science Foundation, Academy of Space Electronic Information Technology (ASEIT) is developing a novel compact spaceborne GNSS receiver; we call it as High Sensitive GNSS Receiver (HiSGR), that can operate effectively in the full range of Earth orbiting missions from Low Earth Orbit (LEO) to geostationary and beyond. Improved signal detection algorithms have been used in signal process section of HiSGR and inertial sensor is used for GNSS/INS ultra-tight coupled design that speed up the acquisition process and provide improved tracking performance for weaker GPS signals and in the presence of high dynamics shifts. HiSGR has experienced extensive tests to demonstrate the promising performance of some crucial specifications, by using real GNSS signal receive on open field and Hardware In-the-Loop (HIL) simulation. Receiver performance in LEO scenarios is provided. Finally, a ground vehicle running test is introduced for the demonstration of fast acquisition and reacquisition capability under conditions of signal lost. HiSGR demonstrated promising performance and acted stable during all those simulations and tests, which proved the capability for future space applications.