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• Meng, H
• Zhang, H
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• Meng, H
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Sensors 2008, 8(5), 3429-3437; doi:10.3390/s8053429

Article

Motion Compensation of Moving Targets for High Range Resolution Stepped-Frequency Radar

Yimin Liu* , Huadong Meng, Hao Zhang and Xiqin Wang

Department of Electronic Engineering, Tsinghua University, Beijing 100084, PR China

* Author to whom correspondence should be addressed.

Received: 7 May 2008 / Accepted: 21 May 2008 / Published: 23 May 2008

(This article belongs to the Special Issue Aerospace Sensor Systems)

Download PDF Full-Text [100 KB, uploaded 16 September 2008 11:02 CEST]

Abstract: High range resolution (HRR) profiling using stepped-frequency pulse trains suffers from range shift and the attenuation/dispersion of range profiles while the target of interest is moving. To overcome these two drawbacks, a new algorithm based on the maximum likelihood (ML) estimation is proposed in this paper. Without altering the conventional stepped-frequency waveform, this algorithm can estimate the target velocity and thereby compensate the phase errors caused by the target’s motion. It is shown that the velocity can be accurately estimated and the range profile can be correctly reconstructed.

Keywords: high resolution; radar imaging; stepped-frequency; motion compensation

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