Optimal trajectory selecting of receiver ship for shorebase-shipborne bistatic inverse synthetic aperture radar

Zitao Liu; Yicheng Jiang

doi:10.1117/1.JRS.13.010501

14 January 2019 Optimal trajectory selecting of receiver ship for shorebase-shipborne bistatic inverse synthetic aperture radar

Zitao Liu, Yicheng Jiang

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 13, Issue 1, 010501 (January 2019). https://doi.org/10.1117/1.JRS.13.010501

Abstract

As an important part of ocean surveillance systems, a typical application of inverse synthetic aperture radar (ISAR) images is target recognition and classification. Since the target projection on the ISAR image plane depends on relative radar–target geometry and the target’s motion, target recognition and classification becomes a more difficult task when the target is noncooperative. To overcome such a problem, shorebase-shipborne bistatic ISAR is proposed. Although the target of interest is noncooperative, the trajectory of the receiver ship platform can be controlled to change the relative radar–target geometry aiming to obtain a desired ISAR image projection. The Doppler frequency model of shorebase-shipborne bistatic ISAR imaging of the ship target in the presence of a low sea state is derived. An optimal trajectory of the receiver ship is presented that is able to obtain desired ISAR images, in which the cross-range coordinate of a scatterer is proportional to its coordinate x in space. The correctness of the proposed Doppler frequency model and effectiveness of trajectory selection are verified by means of several imaging simulations.

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Zitao Liu and Yicheng Jiang "Optimal trajectory selecting of receiver ship for shorebase-shipborne bistatic inverse synthetic aperture radar," Journal of Applied Remote Sensing 13(1), 010501 (14 January 2019). https://doi.org/10.1117/1.JRS.13.010501

Received: 14 September 2018; Accepted: 18 December 2018; Published: 14 January 2019

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KEYWORDS

Receivers

Doppler effect

Target recognition

Error analysis

Radar

Synthetic aperture radar

Coastal modeling

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