潜在的500MHz雷达网及其应用  

A Potential Radar Network Working in the 500MHz Band and Its Applications

作　　者：金旺[1,2] 张西亮[3] 杨勇智 桑吉章 孙明国[6] 

机构地区：[1]中国电波传播研究所昆明站,云南曲靖655333 [2]电波环境特性及模化技术重点实验室昆明站,云南曲靖655333 [3]中国科学院云南天文台,云南昆明650011 [4]中电科技集团39所,陕西西安710065 [5]武汉大学测绘学院,湖北武汉430079 [6]中国科学院大学,北京100049

出　　处：《天文研究与技术》2015年第4期443-446,共4页Astronomical Research & Technology

摘　　要：随着曲靖500 MHz非相干散射雷达的初步建成并投入使用,利用其开展雷达天文学的研究成为可能。基于雷达方程,假定曲靖雷达发射信号,分析了现有昆明40 m天线、密云50 m天线和贵州500 m射电望远镜作为接收器接收回波信号,构建潜在雷达网进行天文测量的能力,报道了探测空间碎片的初步成果,探讨了我国开展地基雷达观测近地小行星的设想。最后呼吁我国开展地基雷达和VLBI联合进行太阳系天体探测,开拓深空领域。In the Qujing city of the Yunnan province, China, an incoherent scatter radar working in the 500MHz band has been built to conduct research on the ionosphere.This ground-based radar can boost the development of radar astronomy in China.By taking advantage of the powerful transmitter of this radar and existing large radio telescopes in China, it is possible to construct a multi-station radar network optimized for detecting space debris and Near Earth Objects （ NEOs） .The radio telescopes are to receive radio-wave echoes from space debris or NEOs, with the echoed waves originally emitted by the radar in Qujing.The radio telescopes include the Kunming 40m, Miyun 50m, and Guizhou FAST （ 500m） telescopes.In this paper we give the result of a preliminary detection of space debris using the radar and briefly describe the potential capabilities of the proposed radar network in monitoring the space environment.We call for a wide range of studies of solar-system objects using Chinese ground-based radars and the VLBI method, which should enhance Chinese deep-space exploration capability and open new frontiers in space science.

关 键 词：潜在雷达网 空间碎片 近地小行星 

分 类 号：P165[天文地球—天文学]