星链机会信号定位方法  被引量:10

Positioning technology based on starlink signal of opportunity

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作  者:秦红磊[1] 张宇[1] QIN Honglei;ZHANG Yu(School of Electronic and Information Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China)

机构地区:[1]北京航空航天大学电子信息工程学院,北京100083

出  处:《导航定位学报》2023年第1期67-73,共7页Journal of Navigation and Positioning

摘  要:为了有效克服利用传统低轨星座卫星定位的缺点,提出一种星链机会信号定位方法:通过实测数据对星链导频信号进行分析;利用星链11.325GHz和11.575GHz频点信号实现星链双频导频信号瞬时多普勒频率提取,并建立瞬时多普勒定位数学模型。实验结果表明:在观测时长小于5 min的情况下,可以实现优于15 m的二维定位精度;该方法在保持同等定位精度的情况下可有效降低观测时长,提高定位效率。In order to efficiently overcome the shortcomings of traditional low-orbit constellation satellite positioning,the paper proposed a positioning method based on starlink signal of opportunity:the characteristics of starlink signal was analyzed;the instantaneous Doppler frequency extraction of starlink dual-frequency pilot signal was realized by using the frequency point signals of starlink 11.325 GHz and 11.575GHz;and the mathematical model of instantaneous Doppler positioning was established.Experimental result showed that the two dimensional positioning accuracy could be better than 15 m within the observation time of less than 5 min;the proposed method could effectively reduce the observation time and improve the positioning efficiency while maintaining the same positioning accuracy.

关 键 词:机会信号 低轨卫星 星链 天基 瞬时多普勒定位 

分 类 号:P228.1[天文地球—大地测量学与测量工程] TN967.1[天文地球—测绘科学与技术]

 

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