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CLC number: TN96

On-line Access: 2011-02-08

Received: 2010-05-03

Revision Accepted: 2010-09-26

Crosschecked: 2011-01-14

Cited: 1

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE C 2011 Vol.12 No.2 P.132-139


Effect of chip rate on the ranging accuracy in a regenerative pseudo-noise ranging system

Author(s):  Jian-wen Jiang, Wei-jun Yang, Chao-jie Zhang, Xiao-jun Jin, Zhong-he Jin

Affiliation(s):  Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   jwjiang@zju.edu.cn, zhangcj@zju.edu.cn

Key Words:  Ranging accuracy, Range jitter, Time delay discrimination, Sample-to-chip rate ratio, Integration time, Autocorrelation function, Fractional chip period delay

Jian-wen Jiang, Wei-jun Yang, Chao-jie Zhang, Xiao-jun Jin, Zhong-he Jin. Effect of chip rate on the ranging accuracy in a regenerative pseudo-noise ranging system[J]. Journal of Zhejiang University Science C, 2011, 12(2): 132-139.

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%T Effect of chip rate on the ranging accuracy in a regenerative pseudo-noise ranging system
%A Jian-wen Jiang
%A Wei-jun Yang
%A Chao-jie Zhang
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%DOI 10.1631/jzus.C1000132

T1 - Effect of chip rate on the ranging accuracy in a regenerative pseudo-noise ranging system
A1 - Jian-wen Jiang
A1 - Wei-jun Yang
A1 - Chao-jie Zhang
A1 - Xiao-jun Jin
A1 - Zhong-he Jin
J0 - Journal of Zhejiang University Science C
VL - 12
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SP - 132
EP - 139
%@ 1869-1951
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1000132

The ranging accuracy of a pseudo-noise ranging system is mainly decided by range jitter and time delay discrimination. Many factors can affect the ranging accuracy, one of which is the chip rate. In digital signal processing, the time delay discrimination and autocorrelation function of sampled ranging sequences of different chip rates are very different. An approximation simulation model is established according to an in-phase quadrature (I/Q) correlator which is used to evaluate the time delay. Simulation results of the range jitter and time delay discrimination show that the chip rate which provides a non-integer sample-to-chip rate ratio can achieve a higher ranging accuracy, and some test results validate the simulation model. In some design missions, the simulation results may help to select an optimum sample-to-chip rate ratio to satisfy the design requirement on the ranging accuracy.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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