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浏览/检索结果: 共1条，第1-1条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Study and calibration of azimuth effect in multi-position strap-down north seeking system (EI CONFERENCE) 会议论文 7th World Congress on Intelligent Control and Automation, WCICA'08, June 25, 2008 - June 27, 2008, Chongqing, China Wang Z.; Zhao J.; Xie M.; Gao F.; Shen C. 收藏  |  浏览/下载：7/0  |  提交时间：2013/03/25 In order to reduce the influence of azimuth effect in multi-position strap-down north seeking system  its cause of formation is studied based on the precession principle of the dynamically tuned gyro. A detecting system  composed by true north prism  two Leica theodolites and benchmark prism fixed in the strap-down north seeking system  was designed to calibrate the azimuth effect. By two steps  many measurements are gone on in every position to eliminate the random error. According to the homologous between the error and the position  a sinusoid is made a fit as compensate curve after the error of twelve positions is measured. Then the azimuth effect of the arbitrary position can be corrected by the curve. The experiment result shows that the seeking north standard deviation is only 11.77 after compensation  which is considerably less than the 87.75 without correction. 2008 IEEE.