Ship dynamics for maritime ISAR imaging.

Doerry, Armin Walter

关键词: ALGORITHMS;    IMAGE PROCESSING;    MOTION;    RADAR;    SEAS;    SHIPS Synthetic Aperture Radar.;    Stability of ships.;    Doppler radar.;   

DOI  :  10.2172/929523
RP-ID  :  SAND2008-1020
PID  :  OSTI ID: 929523
Others  :  TRN: US200822%%878

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Demand is increasing for imaging ships at sea. Conventional SAR fails because the ships are usually in motion, both with a forward velocity, and other linear and angular motions that accompany sea travel. Because the target itself is moving, this becomes an Inverse- SAR, or ISAR problem. Developing useful ISAR techniques and algorithms is considerably aided by first understanding the nature and characteristics of ship motion. Consequently, a brief study of some principles of naval architecture sheds useful light on this problem. We attempt to do so here. Ship motions are analyzed for their impact on range-Doppler imaging using Inverse Synthetic Aperture Radar (ISAR). A framework for analysis is developed, and limitations of simple ISAR systems are discussed.