电波科学学报2016，Vol.31Issue(6)：1081-1086,6.DOI:10.13443/j.cjors.2016092702
非相干散射雷达的高信噪比空间物体距离测量方法
The range measurement of space object with high signal to noise ratio based on the incoherent scatter radar
丁宗华 1唐志美 1代连东 1吴健 1许正文1
作者信息
- 1. 中国电波传播研究所电波环境特性及模化技术重点实验室,青岛266107
- 折叠
摘要
Abstract
The incoherent scatter radar (ISR) is a main tool for monitoring the ionosphere on the ground,and can also he used to detect the space objects.When the signal to noise ratio is a bit high,only one pulse is needed to detect the space object and the coherent integration is unnecessary.There usually exist many phase flips in the radar phase-modulated pulses.When the echo pulse with phase flips is filtered by the receiver,the resulting phase flips are not sharp but consist of many slopes.By investigating the echo amplitude variation within this slope,the time difference between the transmission and reception subpulse and then the range measurements are known.Then all these range measurements during one pulse are applied to a weighted least-square fitting,which gives the range and its error estimation.By analyzing the EISCAT raw data,it is found that the range error is about several tens of meters,which is far better than that from the frequently-used method based on time difference between the transmission and reception pulse.关键词
非相干散射雷达/空间物体/高信噪比/距离/相位翻转Key words
incoherent scatter radar/space object/high signal to noise ratio/range/phase flip分类
信息技术与安全科学引用本文复制引用
丁宗华,唐志美,代连东,吴健,许正文..非相干散射雷达的高信噪比空间物体距离测量方法[J].电波科学学报,2016,31(6):1081-1086,6.
