Robust Vector Tracking Loop for Carrier Phase Signals with Separate Estimation of Common and Single Channel Errors

2017 ◽  
Author(s):  
J. Mar�al ◽  
F. Nunes ◽  
F. Sousa
Keyword(s):  
Carrier Phase ◽  
Single Channel ◽  
Tracking Loop ◽  
Vector Tracking ◽  
Channel Errors

Implementation and Performance Assessment of a Vector Tracking Method Based on a Software GPS Receiver

2011 ◽  
Vol 64 (S1) ◽  
pp. S151-S161 ◽  
Author(s):  
Sihao Zhao ◽  
Mingquan Lu ◽  
Zhenming Feng
Keyword(s):  
Global Positioning System ◽  
Carrier Frequency ◽  
Gps Receiver ◽  
Tracking Loop ◽  
Frequency Tracking ◽  
Tracking Method ◽  
Global Positioning ◽  
Vector Tracking ◽  
Tracking Loops ◽  
And Performance

A number of methods have been developed to enhance the robustness of Global Positioning System (GPS) receivers when there are a limited number of visible satellites. Vector tracking is one of them. It utilizes information from all channels to aid the processing of individual channels to generate receiver positions and velocities. This paper analyzes relationships among code phase, carrier frequency, and receiver position and velocity, and presents a vector loop-tracking algorithm using an Extended Kalman filter implemented in a Matlab-based GPS software receiver. Simulated GPS signals are generated to test the proposed vector tracking method. The results show that when some of the satellites are blocked, the vector tracking loop provides better carrier frequency tracking results for the blocked signals and produces more accurate navigation solutions compared with traditional scalar tracking loops.

Spatial temporal adaptive processing based on delay vector tracking loop

2016 ◽  
Author(s):  
Dengao Li ◽  
Jinqiang Liu ◽  
Jumin Zhao ◽  
Xiaofang Zhao ◽  
Doudou Deng
Keyword(s):  
Adaptive Processing ◽  
Tracking Loop ◽  
Vector Tracking

Research on a chip scale atomic clock aided vector tracking loop

2019 ◽  
Vol 13 (7) ◽  
pp. 1101-1106 ◽  
Author(s):  
Changhui Jiang ◽  
Shuai Chen ◽  
Yuwei Chen ◽  
Yuming Bo
Keyword(s):  
Atomic Clock ◽  
Tracking Loop ◽  
Vector Tracking

Robustness Enhancement of GPS Vector Tracking Loop Using the Fault Detection and Exclusion Algorithm

2015 ◽  
Vol 764-765 ◽  
pp. 570-574 ◽  
Author(s):  
Dah Jing Jwo ◽  
Meng Hsien Hsieh
Keyword(s):  
Fault Detection ◽  
Performance Assessment ◽  
The Other ◽  
Entire System ◽  
Tracking Loop ◽  
Assessment And Evaluation ◽  
Vector Tracking ◽  
Satellite Signal ◽  
Receiver Autonomous Integrity Monitoring ◽  
Exclusion Mechanism

Although the vector tracking loop architectures provide several important advantages, they suffer some fundamental drawbacks. The most significant drawback is that failure of tracking in one channel may affect the entire system and lead to loss of lock on all satellites. The other drawback is that errors in the navigation solutions may degrade the accuracy of the tracking results. For robustness improvement of the vector tracking loop, the EKF based receiver autonomous integrity monitoring (RAIM) and fault detection and exclusion (FDE) algorithms are developed to prevent the error of one channel from spreading into the vector tracking loop. The RAIM is used to check the possible fault in the pseudorange and the pseudorange rate; the fault detection and exclusion mechanism is employed for excluding the abnormal satellite signal to prevent the failure of one channel from spreading into the entire tracking loop. The feasibility of the proposed method will be demonstrated. Performance assessment and evaluation for the proposed approach will be carried out.

Adaptive vector-tracking loop for low-quality GPS signals

2011 ◽  
Vol 9 (4) ◽  
pp. 709-715 ◽  
Author(s):  
Kwang-Hoon Kim ◽  
Gyu-In Jee ◽  
Sung-Hyuck Im
Keyword(s):  
Tracking Loop ◽  
Vector Tracking
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