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Journal of Applied Remote Sensing • Open Access

Velocity measurement and radar imaging of high-speed target by using stepped-chirp signal

Paper Abstract

Stepped-chirp signal (SCS) is widely used by wideband high-resolution radars; however, its bandwidth synthesizing suffers from motion-induced phase errors resulting from the radial velocity of the target, especially for high-speed targets. So motion compensation is very crucial in signal processing for this kind of radar using SCS. Based on the cross-correlation inner frame method for velocity measurement of a single-scattering-center target, the multiple cross-correlation method (MCCM) is proposed for measuring the velocity of a complex target with multiple scattering centers (MSC), which is called SCS-MCCM. By this algorithm, not only the radial velocity, but also the real velocity of a target can be measured under the assumption that it is straight moving. After obtaining the velocity, motion compensation is conducted so as to realize high-resolution imaging. Theoretical analysis and simulations show that the proposed method is feasible and effective for an MSC target.

Paper Details

Date Published: 27 June 2014
PDF: 13 pages
J. Appl. Remote Sens. 8(1) 083606 doi: 10.1117/1.JRS.8.083606
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
Wenshuai Zhai, Ctr. for Space Science and Applied Research (China)
Yunhua Zhang, Ctr. for Space Science and Applied Research (China)

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