NDLI: A phase-based ranging method for fast frequency hopping system

Content Provider	IEEE Xplore Digital Library
Author	Yue Liu Wangdong Qi Su Zhang Zhi Wang
Copyright Year	2014
Description	Author affiliation: PLA Univ. of Sci. & Technol., Nanjing, China (Yue Liu; Wangdong Qi; Su Zhang; Zhi Wang)
Abstract	Alternative Position, Navigation, Time (APNT) service is gradually on the rise to maintain safety, and minimize economic impacts from GNSS interference outages within the airspace system. As a result, anti-interference ranging methods are urgently needed in APNT systems. Fast frequency hopping technology can provide strong resistance to radio interference for APNT systems. However, it is hard to get accurate range estimate from measurements of one hop because the residence time and the baseband width are limited in fast frequency hopping systems. In this paper, we propose a new phase-based ranging method for fast frequency hopping system, which is called Time-Frequency Matrix Ranging (TFMR). By TFMR, we can combine measurements of multi-hops to achieve high accuracy of range estimate. We present DFT-based and FFT-based estimators for different scenarios respectively. Different estimate accuracies are achieved by using matrices in different sizes. We calculate the Cramer Rao lower bounds (CRLB), which can provide a benchmark for selecting matrices with different signal-to-noise ratio.
Starting Page	1
Ending Page	5
File Size	387332
Page Count	5
File Format	PDF
ISBN	9781479973392
DOI	10.1109/WCSP.2014.6992172
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time-frequency analysis Baseband FHSS Estimation Phase-based ranging Receivers Distance measurement Frequency estimation CRLB Anti-jamming
Content Type	Text
Resource Type	Article

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