CAJ | 학술논문

针对我国建设卫星高精度测定轨系统的需要,分析国际上现有的主要高精度测定轨系统的优缺点,重点介绍法国DORJS系统的组成与工作原理,对其优缺点进行详细的分析.在此基础上,探讨一种类似法国DORIS系统的卫星高精度测定轨系统方案.方案将DORIS系统的单载波信标信号改为扩频信号,系统复杂性虽然略有增加,但它克服了DORIS系统信标之间的干扰问题,实现了卫星的高精度授时,提高了上行通信链路的容量,具有良好的适用性.
침대아국건설위성고정도측정궤계통적수요,분석국제상현유적주요고정도측정궤계통적우결점,중점개소법국DORJS계통적조성여공작원리,대기우결점진행상세적분석.재차기출상,탐토일충유사법국DORIS계통적위성고정도측정궤계통방안.방안장DORIS계통적단재파신표신호개위확빈신호,계통복잡성수연략유증가,단타극복료DORIS계통신표지간적간우문제,실현료위성적고정도수시,제고료상행통신련로적용량,구유량호적괄용성.
A precise orbit determination system for satellites should be established for the development of our aerospace industry. Several precise orbit determination methods in use are analyzed on their advantages and disadvantages. Based on the DORIS system, a precise orbit determination scheme is proposed in order to overcome the disadvantages. Changing the signals to spread spectrum signals, the scheme can eliminate the signal interference of beacons, achieve accurate time transfer of satellites, and improve the channel capacity of the uplink, just with a little more complexity. It is applicable for the precise orbit determination of satellites.