雷达外场辐射功率测试方法研究

Research on Field Test of Radar Transmit Power

有源相控阵雷达作为现代雷达的核心领域被广泛使用,相较于无源相控阵雷达使用统一的发射机和接收机,有源相控阵雷达天线端的每个辐射器都配有一个发射/接收组件（T/R组件）,能独立发射/接收电磁波,因此提升了雷达性能。在外场测试该种体制的雷达发射功率时,不能采用无源相控阵雷达将发射信号从发射机末端耦合器引出直接测试的方法,必须在空间进行辐射功率测试,再通过数学公式计算出发射功率。结合有源相控阵雷达辐射特点,建立优化、合理的测试系统,提出了适应外场有源相控阵雷达辐射功率空间测试的解决方案。

Active phased array radar（ APAR） is wildly used as the core comprehension of modern radar. Comparing to passive phased array radar（ PAR） with unified transmitter and receiver, each radiator of APAR antenna is equipped with a transmitting/receiving（T/R） unit that can independently transmit and receive electromagnetic wave, which causes the performance improvement of radar. When testing transmit power of APAR, the traditional method of testing transmit power conducted form transmitter coupler of PAR is useless, it must be tested in space then calculated through mathematical formula. The method that is suitable for on field testing transmit power of APAR in space is introduced through building a optimized test system combined with the characteristics of APAR radiation.