【摘要】For global navigation satellite system(GNSS) in the application of high earth orbit(HEO) determination, there are problems such as small number of visible satellites and weak signal magnitude. The transmitting and receiving errors of GNSS signal in the environment of HEO space are analyzed, and related compensating scheme is also proposed. Acquisition of GNSS signal is implemented by using weak signal acquisition technology based on Duffing. Precise tracking of weak GNSS signal is also realized by adopting dynamic detection and compensation technology based on Duffing chaotic oscillator. Simulation results show that, certain acquisition sensitivity and navigation precision can be reached, and the acquisition and tracking of weak GNSS signal can be realized by using the proposed technology, which provides good technology support for autonomous navigation of HEO and large elliptical spacecrafts.
【关键词】
《建筑知识》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《重庆高教研究》 2015-06-30
《重庆高教研究》 2015-06-30
《重庆高教研究》 2015-06-26
《当代体育科技》 2015-07-07
Copyright © 2013-2016 ZJHJ Corporation,All Rights Reserved
发表评论
登录后发表评论 (已发布 0条)点亮你的头像 秀出你的观点