This paper introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested while attached to life jackets and a small boat. In this demonstration test carried out on the Baltic Sea, the system was able to detect and range the active tags up to a distance of 5800 m using an illumination signal transmit-power of 100 W. Special attention is given to the development, performance, and conceptual differences between passive and active tags used in the system. Guidelines for achieving a high HR dynamic range, including a system components description, are given and a comparison with other HR systems is performed. System integration with a commercial maritime X-band navigation radar is shown to demonstrate a solution for rapid search and rescue response and quick localization.

中文翻译：

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一种使用无源和有源标签的海上搜救SFCW谐波雷达系统

本文介绍了一种基于S波段照明谐波雷达（HR）的新型海上搜救系统。在连接到救生衣和小船上时，已经开发和测试了无源和有源标签。在波罗的海进行的这项演示测试中，该系统能够使用 100 W 的照明信号发射功率检测和定位有源标签，距离可达 5800 m。特别关注开发、性能、以及系统中使用的无源标签和有源标签之间的概念差异。给出了实现高 HR 动态范围的指南，包括系统组件描述，并与其他 HR 系统进行了比较。