Image and Signal Processing Methods

Velocity estimation of high-speed target for step frequency radar

[+] Author Affiliations
Ruiqi Tian, Caiyong Lin, Qinglong Bao, Zengping Chen

National University of Defense Technology, Science and Technology on Automatic Target Recognition Laboratory (ATR), No. 109 Deya Road, Changsha, Hunan 410073, China

J. Appl. Remote Sens. 10(2), 025022 (Jun 15, 2016). doi:10.1117/1.JRS.10.025022
History: Received December 31, 2015; Accepted June 1, 2016
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Abstract.  Aiming to precisely estimate the velocity of high-speed targets for step frequency (SF) radar, a positive–positive–negative SF waveform consisting of two continuous positive SF pulse trains and a negative one is designed, and a velocity estimation method is proposed based on two-dimensional time-domain cross correlation (2-D TDCC). Making full use of the characteristics of the designed waveform, the coarse velocity estimation is achieved by 2-D TDCC of positive–positive SF pulse trains and then the Radon transform is applied to solve velocity ambiguity for high-speed targets. After velocity compensation for positive–negative SF pulse trains, the velocity residual is estimated precisely by 2-D TDCC. Simulation results show that the proposed method exhibits good performance for estimation accuracy, stability performance, computational complexity, and data rate by comparisons.

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Citation

Ruiqi Tian ; Caiyong Lin ; Qinglong Bao and Zengping Chen
"Velocity estimation of high-speed target for step frequency radar", J. Appl. Remote Sens. 10(2), 025022 (Jun 15, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.025022


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