Global navigation satellite system (GNSS) is by far the most cost-effective outdoor technology currently available – and will remain so for the foreseeable future. Already today GNSS is the main source for outdoor location information, which is especially important for large scale applications and when working away from urban areas. Our group mainly concentrate on the positioning performance of GNSS receiver in complex environment, such as multipath mitigation, spoofing detection, multi-source fusion, signal characteristics modeling etc.
Interference of navigation signal
A software receiver is developed to implement the novel algorithms which proposed by our group. The basic functions of the receiver contain three part which are signal acquisition, signal tracking and PVT solution. It supports to process GPS L1/L2 and BDS B1/B2 signals simultaneously to log the ephemeris, elevation, azimuth, CNR, multipath signal for each satellite. The advantage of this receiver is that it can separate LOS signal and multipath signal in the tracking loop, and it can also measure the time delay, fading frequency and power attenuation of each multipath signal.
Block diagram of software receiver architecture
The following figure is the interface of software receiver. It gives the basic measurement of each satellite and the real-time positioning result can be plotted on the map.
The interface of software receiver
Paper list：
- Statistical Model Based on Markov Chain for GPS and BDS Signal in Different Environment. ION GNSS+ 2017
- A Sparse Direct Visual-Inertial Method for Pedestrian Navigation Using Smartphone Sensors. ION GNSS+ 2017
- Research and Performance Analysis of Tightly Coupled Vision, INS and GNSS System for Land Vehicle Applications. ION GNSS+ 2017
- Study on Multipath Model of BDS / GPS Signal in Urban Canyon. CNSC 2017
- Novel GNSS Receiver Test Bench Based on Scenario Database and Signal Playback Technology. ICEMI2017
- Kalman Filtering Positioning Algorithms in Multipath Environment. CNSC 2016
- Multipath Channel Characteristics and Multipath Life-time Model Research for Different GNSS Orbit Satellites. ION GNSS+ 2015
- An Innovative Remote Testing System for GNSS Receiver Based on IF Sampled Signal Library of Various Scenarios. ION GNSS+ 2015