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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Growler detection in sea clutter with coherent radars
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Growler detection in sea clutter with coherent radars

机译：相干雷达在海杂波中的咆哮者检测

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摘要

Ship navigation through ice-infested waters is a problem of deep concern to the Canadian shipping and exploration industry. Conventional marine radars have difficulty detecting small pieces of glacial ice called growlers which are very hazardous to vessels if struck. In an effort to improve detection performance, X-band radar measurements were collected and analyzed to determine the characteristics of clutter and growler returns that could lead to their separability. These analyses suggested that coherent medium dwell-time processing (i.e., integration times of a fraction of a second) could provide improvement In growler detectability over conventional methods; and long dwell-time processing (i.e., integration times on the order of seconds) could provide even further improvement. We report on the performance of two new coherent, medium dwell-time detectors. A third detector which is representative of conventional marine radar serves as a basis for comparison Although significant improvement in growler detectability is achieved, the two coherent detectors still fall short of operational requirements. This leads to the development of a long dwell-time detector which provides considerably better performance. Empirical results indicate that this new detector could well satisfy stringent operational requirements
机译：船舶在受冰水侵袭的海域航行是加拿大航运和勘探业深切关注的问题。常规的海上雷达很难检测到被称为咆哮者的小块冰川冰，如果撞击，对船只非常危险。为了提高检测性能，收集并分析了X波段雷达测量值，以确定杂波和咆哮者回波的特征，这可能导致它们的可分离性。这些分析表明，相干介质的停留时间处理（即，积分时间的几分之一秒）可以提供比传统方法更高的生长者可检测性。较长的驻留时间处理（即，集成时间大约为几秒钟）可以提供进一步的改进。我们报告了两种新型相干，中等停留时间探测器的性能。代表常规船用雷达的第三个探测器用作比较的基础。尽管咆哮者的可探测性得到了显着改善，但两个相干探测器仍未达到运行要求。这导致了长停留时间检测器的开发，该检测器提供了相当好的性能。实验结果表明，这种新型探测器可以很好地满足严格的运行要求

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