摘要
高重复率卫星激光测距(SLR)采用低能量激光,回波率较低且探测器暗噪声数明显增多,尤其在白天测距强背景噪声时,回波信号更是难于识别。该文提出了两次滤波的回波实时识别方法。为验证此方法的可行性,使用了Graz激光站2kHz实际测距数据,模拟了高重复率测距过程。结果表明,此方法在对高重复率激光测距回波识别中是有效的,为开展kHz激光测距打下了技术基础。
In high repetition rate satellite laser ranging,there are some characteristics such as weak laser pulse energy,low return rate and more dark noises of detector. Because of the above characteristics,the detection of return signal is more difficult than low repetition rate,especially tracking at daytime. This paper presents a method of real time return detection,called twice filters in series. In order to validate the feasibility of the method,a simulative experiment by using 2kHz SLR data of Graz is performe...
出处
《中国科学院上海天文台年刊》
2008年第1期67-73,共7页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
基金
天文联合基金(No.10778634)面上项目
上海市空间导航与定位技术重点实验室项目(No.06DZ22101)资助课题
关键词
高重复率卫星激光测距
回波实时识别
两次滤波t
high repetition rate satellite laser ranging — real time return detection — twice filters in series
