A new wideband interference suppression method for GNSS system

2015 ◽  
Author(s):  
Yan Bai ◽  
XiaoChun Lu ◽  
Tao Han ◽  
Jin Wang
Keyword(s):  
Interference Suppression ◽  
Wideband Interference ◽  
Suppression Method

scholarly journals Cascaded Multitype Interferences Suppression Method Using Sparse Representation and Array Processing for GNSS Receiver

2017 ◽  
Vol 2017 ◽  
pp. 1-17 ◽  
Author(s):  
Qiang Guo ◽  
Liangang Qi
Keyword(s):  
Sparse Representation ◽  
Array Processing ◽  
Matching Pursuit ◽  
Interference Suppression ◽  
Satellite System ◽  
Signal Interference ◽  
Wideband Interference ◽  
Interference Signals ◽  
Suppression Method ◽  
Global Navigation Satellite

Interference suppression techniques have been intensively studied in nearly two decades due to their importance for maintaining the integrity and functionality of global navigation satellite system (GNSS). However, the interference suppression method applicable for the complex receiving environment in which there are multitype interfering signals has not been considered in most of the researches. To deal with this problem better, a cascaded multitype interferences suppression method using sparse representation and array processing is proposed. In the first stage, according to the sparsity of the narrowband and modulated wideband interference signals, a novel parallel multichannel signal interference suppression method based on matching pursuit (MP) algorithm and a design strategy for the overcomplete dictionary are proposed to mitigate the interferences with sparse features. Then, the minimum power distortionless response (MPDR) beamformer is employed in the second stage to suppress the residuary interferences (such as Gaussian noise interferences). Compared with existing algorithms, the proposed method can not only effectively suppress the interference arriving from the same direction with the desired signal and increase the Degree of Freedom (DoF) of the array antenna, but also introduce no distortion into the navigation signal. The effectiveness of the proposed method is illustrated by theoretical analysis and several simulation results.

The Application of a Linear FM Interference Suppression in DSSS Technology Systems

2014 ◽  
Vol 644-650 ◽  
pp. 4599-4602
Author(s):  
Gang Fu ◽  
Jian Hua Lin ◽  
Qian He
Keyword(s):  
Spread Spectrum ◽  
Communication System ◽  
Interference Suppression ◽  
Direct Sequence Spread Spectrum ◽  
Signal Interference ◽  
Interference Signal ◽  
Direct Sequence ◽  
Research Focus ◽  
Wideband Interference ◽  
Suppression Technique

Spread spectrum communication system wideband interference suppression technique has drawn increasing attention. In this paper, the typical broadband interference signal interference LFM (Linear Frequency-Modulated, LFM), for example, the results of research focus and reviews the current direct sequence spread spectrum (Direct Sequence Spread Spectrum, DSSS) system wideband interference suppression.

scholarly journals Effect Analysis of GNSS Traditional Interference Suppression Method on Fast Chirp Interference

2019 ◽  
Vol 1314 ◽  
pp. 012055
Author(s):  
Haiyu Zhang ◽  
Feiqiang Chen ◽  
Shengqiang Lou ◽  
Zhengrong Li ◽  
Guangfu Sun
Keyword(s):  
Interference Suppression ◽  
Effect Analysis ◽  
Suppression Method

An Interference Suppression Method for Multistatic Radar Based on Noise Subspace Projection

2020 ◽  
Vol 20 (15) ◽  
pp. 8797-8805
Author(s):  
Hengli Yu ◽  
Nan Liu ◽  
Linrang Zhang ◽  
Qiang Li ◽  
Juan Zhang ◽  
...  
Keyword(s):  
Interference Suppression ◽  
Subspace Projection ◽  
Noise Subspace ◽  
Suppression Method ◽  
Multistatic Radar
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