提出一种基于辐射场窄带测试的空间放电辐射信号探测系统,系统主要由8路定向性天线阵、高增益接收前端以及数据处理单元构成。基于该探测系统建立了空间平面4元阵列定位模型,研究了空间放电辐射源位置快速搜索算法,并对定位精度进行了试验验证。实验结果表明,该系统能对1 km以内的空间放电辐射源进行探测,阵元尺寸为10 m的空间平面4元阵列的距离定位误差小于2.5%。该探测定位系统可以用于复杂电磁环境下空间放电源位置的确定。

Space discharge is one of the important space stochastic pulse radiation source, and the electromagnetic signals it generates are the interference for frequency equipments such as communication and navigation. A detection system for space discharge radiation signals based on the narrow band test of radiation field is proposed. It consists of directional antennas, high transmission gain receive front-end and recording equipment. A location model of the space plane four-element arrays is built. The rapid search algorithm for space discharge radiation source is researched. And the location precision is tested by experiment. The results show that the system can detect space discharge radiation source within 1 km. the distance location error of space plane four-element arrays with 10 m size is less than 2.5%. The detection and location system can be applied to locating the space discharge source in complex electromagnetic environment, and it is significant for signals recognition and analysis with complex interference.