陈红飞,章生平,孙立达,刘艳阳,魏春

• 1:上海卫星工程研究所

摘要(Abstract)：

设计一种基于GPS的卫星自主校时系统。采用CPU晶振和高稳晶振平滑切换结构,并通过总线校时和秒脉冲校时手段进行修正维护。总线校时方式通过时延参数的测量及修正,校时精度可达到300μs,接口简单,操作方便;秒脉冲校时方式通过硬件实现,校时精度优于100μs,稳定可靠,精度较高。两种校时方法组合使用,具有高精度、高可靠、自主可控,易于实现等特点。地面试验结果表明,该系统可满足卫星的高要求。

关键词(KeyWords)： 卫星;自主校时;高精度;GPS秒脉冲;1553B总线;系统设计

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目:GEO-LEO方位多通道高分辨率宽幅双基地SAR成像技术研究(61601298)资助课题~~

作者(Author): 陈红飞,章生平,孙立达,刘艳阳,魏春

DOI: 10.16652/j.issn.1004-373x.2018.15.024

参考文献(References)：

• [1]SARABANDI K,KELLNDORFER J,PIERCE L.GLORIA:geostationary/low-earth orbiting radar image acquisition system:a multi-static GEO/LEO synthetic aperture radar satellite constellation for earth observation[C]//2003 IEEE International Geoscience and Remote Sensing Symposium.[S.l.]:IEEE,2003:773-775.
• [2]李浛,程砾瑜,曹海宁,等.GPS高精度校时在卫星控制系统中的应用[J].遥感学报,2012,16(z1):52-56.LI H,CHENG L Y,CAO H N,et al.Usage of high accuracy GPS time calibration in satellite onboard control system[J].Journal of remote sensing,2012,16(S1):52-56.
• [3]田贺祥,王同桓,李璇,等.遥感卫星星上时间管理方法[J].传感器与微系统,2013,32(4):80-82.TIAN Hexiang,WANG Tonghuan,LI Xuan,et al.On-board time management method of remote sensing satellite[J].Transducer and microsystem technologies,2013,32(4):80-82.
• [4]张斌,张东来.基于GPS的高精度时钟在线校频与授时研究[J].中国电机工程学报,2012,32(10):22.ZHANG Bin,ZHANG Donglai.GPS-based precision clock online frequency calibration and time service[J].Proceedings of the CSEE,2012,32(10):22.
• [5]DDC Corporation.BU-65170/61580 and BU-61585:MIL-STD-1553A/B NOTICE 2 RT and BC/RT/MT,advanced communication engine(ACE)[EB/OL].[2010-10-09].https://wenku.baidu.com/view/9da446f34693daef5ef73d0b.html.
• [6]章生平,朱海园,朱维,等.卫星系统时钟基于总线方式的校准方法:CN102096372B[P].2012-09-19.ZHANG Shengping,ZHU Haiyuan,ZHU Wei,et al.Calibration method of satellite system clock based on bus:CN102096372B[P].2012-09-19.
• [7]于佳,邓元勇.基于GPSD的高精度校时系统[J].现代电子技术,2012,35(3):45-48.YU Jia,DENG Yuanyong.The high-precision time synchronous system based on GPSD[J].Modern electronics technique,2012,35(3):45-48.