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INS辅助GPS接收机及其对伪距测量精度的影响 被引量:1

INS Assists GPS Receiver and its Influence to Pseudorange Measurement Accuracy
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摘要 GPS接收机通过测量伪距进行载体位置的解算,而伪距测量精度与接收机的码延迟锁相环带宽有关。为了提高GPS接收机伪距测量精度,通常采用INS辅助、码/载波跟踪环技术。根据以C/N0为基础的伪距测量方差,分析INS辅助GPS接收机原理,研究INS辅助对接收机伪距测量精度的影响。在复杂电磁环境下,INS辅助GPS接收机是组合导航发展的方向,特别是紧耦合INS/GPS组合模式。 GPS receivers calculate its carrier's position through measuring pseudo range whose precision has relationship with code delay phase-locked loop bandwidth. In order to increase the pseudo range measuring precision of GPS receivers, INS assistance, Tracking loop of PN code-carrier are usually used. According to variance of measuring pseudo range that based on C/No, this paper analyzes the principle of INS assists GPS receivers, does researeh the Influence to Pseudorange Measurement Accuracy by using INS assistance. Under the condition of intricate electromagnetic environment, INS assists GPS receiver is the developing orientation of integrated navigation, especially the integrated mode of close coupling INS/GPS.
作者 周坤芳 杜博
出处 《舰船电子工程》 2009年第5期72-73,90,共3页 Ship Electronic Engineering
关键词 GPS/INS 码/载波跟踪环 组合原理 伪距测量精度 组合模式 GPS/INS, tracking loop of PN code-carrier, integrated principle, pseudorange measurement accuracy,modular pattern
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