Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals
Along with the rapid development of the Global Navigation Satellite System (GNSS), satellite navigation signals have become more diversified, complex, and agile in adapting to increasing market demands. Various techniques have been developed for processing multiple navigation signals to achieve bett...
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doaj-86c96d1e6bbc4b3c8f5e31f07566d5252020-11-25T01:05:47ZengMDPI AGSensors1424-82202017-10-011710236010.3390/s17102360s17102360Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C SignalsChuhan Wang0Xiaowei Cui1Tianyi Ma2Sihao Zhao3Mingquan Lu4Department of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaAlong with the rapid development of the Global Navigation Satellite System (GNSS), satellite navigation signals have become more diversified, complex, and agile in adapting to increasing market demands. Various techniques have been developed for processing multiple navigation signals to achieve better performance in terms of accuracy, sensitivity, and robustness. This paper focuses on a technique for processing two signals with separate but adjacent center frequencies, such as B1I and B1C signals in the BeiDou global system. The two signals may differ in modulation scheme, power, and initial phase relation and can be processed independently by user receivers; however, the propagation delays of the two signals from a satellite are nearly identical as they are modulated on adjacent frequencies, share the same reference clock, and undergo nearly identical propagation paths to the receiver, resulting in strong coherence between the two signals. Joint processing of these signals can achieve optimal measurement performance due to the increased Gabor bandwidth and power. In this paper, we propose a universal scheme of asymmetric dual-band tracking (ASYM-DBT) to take advantage of the strong coherence, the increased Gabor bandwidth, and power of the two signals in achieving much-reduced thermal noise and more accurate ranging results when compared with the traditional single-band algorithm.https://www.mdpi.com/1424-8220/17/10/2360BeiDou Navigation Satellite SystemASYM Dual-Band Trackingtracking channel architectureGabor Bandwidth |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chuhan Wang Xiaowei Cui Tianyi Ma Sihao Zhao Mingquan Lu |
spellingShingle |
Chuhan Wang Xiaowei Cui Tianyi Ma Sihao Zhao Mingquan Lu Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals Sensors BeiDou Navigation Satellite System ASYM Dual-Band Tracking tracking channel architecture Gabor Bandwidth |
author_facet |
Chuhan Wang Xiaowei Cui Tianyi Ma Sihao Zhao Mingquan Lu |
author_sort |
Chuhan Wang |
title |
Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals |
title_short |
Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals |
title_full |
Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals |
title_fullStr |
Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals |
title_full_unstemmed |
Asymmetric Dual-Band Tracking Technique for Optimal Joint Processing of BDS B1I and B1C Signals |
title_sort |
asymmetric dual-band tracking technique for optimal joint processing of bds b1i and b1c signals |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2017-10-01 |
description |
Along with the rapid development of the Global Navigation Satellite System (GNSS), satellite navigation signals have become more diversified, complex, and agile in adapting to increasing market demands. Various techniques have been developed for processing multiple navigation signals to achieve better performance in terms of accuracy, sensitivity, and robustness. This paper focuses on a technique for processing two signals with separate but adjacent center frequencies, such as B1I and B1C signals in the BeiDou global system. The two signals may differ in modulation scheme, power, and initial phase relation and can be processed independently by user receivers; however, the propagation delays of the two signals from a satellite are nearly identical as they are modulated on adjacent frequencies, share the same reference clock, and undergo nearly identical propagation paths to the receiver, resulting in strong coherence between the two signals. Joint processing of these signals can achieve optimal measurement performance due to the increased Gabor bandwidth and power. In this paper, we propose a universal scheme of asymmetric dual-band tracking (ASYM-DBT) to take advantage of the strong coherence, the increased Gabor bandwidth, and power of the two signals in achieving much-reduced thermal noise and more accurate ranging results when compared with the traditional single-band algorithm. |
topic |
BeiDou Navigation Satellite System ASYM Dual-Band Tracking tracking channel architecture Gabor Bandwidth |
url |
https://www.mdpi.com/1424-8220/17/10/2360 |
work_keys_str_mv |
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