Polyphase Decomposition Based Space Frequency Adaptive Processing in Antenna Array GNSS Receivers

2020 ◽  
Author(s):  
Xiangming Chang ◽  
Xiaowei Cui ◽  
Mingquan Lu ◽  
Jian Wen
Keyword(s):  
Antenna Array ◽  
Adaptive Processing ◽  
Gnss Receivers ◽  
Space Frequency

Robust tensor-based techniques for antenna array-based GNSS receivers in scenarios with highly correlated multipath components

2020 ◽  
Vol 101 ◽  
pp. 102715 ◽  
Author(s):  
Daniel Valle de Lima ◽  
Mateus da Rosa Zanatta ◽  
João Paulo C.L. da Costa ◽  
Rafael T. de Sousa Jr. ◽  
Martin Haardt
Keyword(s):  
Antenna Array ◽  
Gnss Receivers ◽  
Highly Correlated

Performance of space-frequency combining at the antenna array of a MC-CDMA system

2007 ◽  
Vol 43 (4) ◽  
pp. 1351-1361 ◽  
Author(s):  
Wei Yang ◽  
Junshi Chen ◽  
Zhenhui Tan ◽  
Shixin Cheng
Keyword(s):  
Antenna Array ◽  
Cdma System ◽  
Space Frequency

scholarly journals The Unbiased Characteristic of Doppler Frequency in GNSS Antenna Array Processing

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Yuchen Xie ◽  
Zhengrong Li ◽  
Feiqiang Chen ◽  
Huaming Chen ◽  
Feixue Wang
Keyword(s):  
Antenna Array ◽  
Carrier Phase ◽  
Array Processing ◽  
Doppler Frequency ◽  
Low Complexity ◽  
Satellite System ◽  
Accurate Estimation ◽  
Array Technology ◽  
Gnss Receivers ◽  
Global Navigation Satellite

The antenna array technology, especially the spaced-time array processing (STAP), is one of the effective methods used in Global Navigation Satellite System (GNSS) receivers to refrain the power of jamming and enhance the performance of receivers in the circumstance of interference. However, biases induced to the receiver because of many reasons, including characteristic of antennas, front-end channel electronics, and space-time filtering, are extremely harmful to the high precise positioning of receivers. Although plenty of works have been done to calibrate the antenna and to mitigate these biases, achieving a good performance of antijamming, high accuracy, and low complexity at the same time still remains challenging. Different from existing works, this paper leverages the characteristic of GNSS signal’s Doppler frequency in STAP, which is proven to remain unbiased to solve the problem, even when the nonideal antennas are used and the interference circumstance changes. Since the integration of frequency is carrier phase, the unbiased Doppler frequency leads to an accurate estimation of carrier phase which can be used to calibrate the antenna array without extra apparatus or complicating algorithms. Therefore, a simple Doppler-aid strategy may be developed in the future to solve the difficulty of STAP bias mitigation.

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