logo

SCIENCE CHINA Information Sciences, Volume 60 , Issue 8 : 082301(2017) https://doi.org/10.1007/s11432-016-0097-4

A high-precision phase-derived range and velocity measurement method based on synthetic wideband pulse Doppler radar

More info
  • ReceivedJun 30, 2016
  • AcceptedAug 3, 2016
  • PublishedDec 8, 2016

Abstract

Development of radar technology needs to address the two-dimensional high resolution of range and velocity simultaneously for high-speed targets. Taking advantage of the superior coherent performance of synthetic wideband pulse Doppler radar, this paper elaborates the principles of phase-derived range and velocity measurements. Moreover, this paper explores the key technologies of unwrapping phase ambiguity, and discusses the phase unwrapping strategy at a low signal-to-noise ratio (SNR). The proposed method can be applied to the conditions of low SNR and has comparatively strong practicality in engineering. Both the ejection ball and civil aircraft experiments have validated the correctness and feasibility of the proposed method. In particular, the experimental results reveal that the accuracy of phase-derived range and velocity measurement has reached a level of submillimeter or millimeter and centimeter/second or submillimeter/second, respectively.


Funded by

111 Project of China(B14010)

National Natural Science Foundation of China(61301189)


Acknowledgment

Acknowledgments

This work was supported by 111 Project of China (Grant No. B14010) and National Natural Science Foundation of China (Grant No. 61301189).


References

[1] Liu H B, Lu J D. Target motion compensation algorithm based on Keystone transform for wideband pulse Doppler radar. Trans Beijing Inst Tech, 2012, 32: 625-630 Google Scholar

[2] Long T, Ren L X. HPRF pulse Doppler stepped frequency radar. Sci China Ser F-Inf Sci, 2009, 52: 883-893 Google Scholar

[3] Bao Y X. Signal processing algorithms in stepped frequency wideband radar. Dissertation for PH.D. Degree. Beijing: Beijing Institute of Technology, 2010. 40--106. Google Scholar

[4] Gao W B, Ding Z G, Zhu D L, et al. Improved spectrum reconstruction technique based on chirp rate modulation in stepped-frequency SAR. Sci China Inf Sci, 2015, 58: 102308-893 Google Scholar

[5] Jin K, Wang W D, Wang D J. The study on a new radar waveform (PCSF) with high range resolution. J Univ Sci Tech China, 2006, 36: 137-142 Google Scholar

[6] Steudel F. An Improved Process for Phase-Derived-Range Measurements. World Intellectual Property Organization Patent, 1651978, 2005-2-24. Google Scholar

[7] Steudel F. Process for Phase-Derived-Range Measurements. U.S. Patent, 7046190, 2005-2-10. Google Scholar

[8] Skolnik M I. Introduction to Radar Systems. 3rd ed. Beijing: Publishing House of Electronics Industry, 2007. 313--402. Google Scholar

[9] Liu Y, Hou Q K, Xu S Y, et al. System distortion analysis and compensation of DIFS signals for wideband imaging radar. Sci China Inf Sci, 2015, 58: 020304-142 Google Scholar

[10] Wang H F, Ren L X. Velocity estimation of moving targets with stepped-frequency radar based on Doppler frequency difference. J Beijing Inst Tech, 2014, 23: 78-82 Google Scholar

[11] Li L. Theory and implementation of stepped-frequency radar signal processing. Dissertation for PH.D. Degree. Beijing: Beijing Institute of Technology, 2010. 55--68. Google Scholar

[12] Tian J, Cui W, Shen Q, et al. High-speed maneuvering target detection approach based on joint RFT and keystone transform. Sci China Inf Sci, 2013, 56: 062309-82 Google Scholar

[13] Gao M G, Zhou D Y, Mao E K. A method of digital moving target track based on waveform analysis. Chinese J Electron, 1998, 26: 112-114 Google Scholar

[14] Liu Y X, Zhu D K, Li X, et al. Micromotion characteristic acquisition based on wideband radar phase. IEEE Trans Geosci Remote Sens, 2014, 52: 3650-3657 CrossRef Google Scholar

[15] Bao Y X, Ren L X, He P K, et al. Velocity measurement and compensation method based on range profile cross-correlation in stepped-frequency radar. Syst Eng Electron, 2008, 30: 2112-2115 Google Scholar

[16] Li L, Ren L X, Mao E K, et al. Accurate velocity measurement of range profile cross correlation in stepped-frequency signal. Trans Beijing Inst Tech, 2011, 31: 708-712 Google Scholar

[17] Wang G Y, Bao Z. The minimum entropy criterion of range alignment in ISAR motion compensation. In: Proceedings of Conference Radar, Edinburgh, 1997. 14--16. Google Scholar

Copyright 2020 Science China Press Co., Ltd. 《中国科学》杂志社有限责任公司 版权所有

京ICP备17057255号       京公网安备11010102003388号