To realize the data synchronization between the inertial measurement unit （IMU） and the global positioning system （GPS）, the synchronization technology in the IMU/GPS integrated measurement system of vehicle motio...To realize the data synchronization between the inertial measurement unit （IMU） and the global positioning system （GPS）, the synchronization technology in the IMU/GPS integrated measurement system of vehicle motion parameters is studied. According to the characteristics of the output signals of the IMU and the GPS, without the IMU synchronization signal, the synchronization circuit based on CPLD is designed and developed, which need not alter the configurations of the IMU and GPS. Experiments of measuring vehicle motion parameters, which rely on the synchronization circuit to realize IMU/GPS data synchronization, are made. The driving routes in experiments comprise a curve and a straight line. Experimental results show that the designed circuit can accurately measure the synchronization time difference and the IMU period, and can effectively solve the data synchronization in IMU/GPS integration. Furthermore, the IMU/GPS integrated measurement system based on the synchronization circuit can measure and calculate many vehicle motion parameters in high frequency mode.展开更多
据英国简氏防务2011年9月13日报道，今年英国的古德里奇公司在伦敦会展中心（Exhibition Center of London，ExCel）推出了一种名为μNav的新型微型导航装置。μNav集成了MiniM微型惯性制导装置和GPS芯片，是一种高性能IMU／GPS复合导...据英国简氏防务2011年9月13日报道，今年英国的古德里奇公司在伦敦会展中心（Exhibition Center of London，ExCel）推出了一种名为μNav的新型微型导航装置。μNav集成了MiniM微型惯性制导装置和GPS芯片，是一种高性能IMU／GPS复合导航装置。早在2009年的英国国际防务展（Defense ＆ Security Equipment Internation，DESi）上，该公司曾披露过MiniM微型惯性制导装置。展开更多
简单的介绍精密单点定位(PPP-Precise Point Positioning)和辅助航空测量技术,并进行了利用精密单点定位技术进行IMU/GPS系统数据处理试验。分析了精密单点定位技术的定位精度,IMU/PPP联合处理的精度,对结果进行了分析,总结了采用精密...简单的介绍精密单点定位(PPP-Precise Point Positioning)和辅助航空测量技术,并进行了利用精密单点定位技术进行IMU/GPS系统数据处理试验。分析了精密单点定位技术的定位精度,IMU/PPP联合处理的精度,对结果进行了分析,总结了采用精密单点定位技术进行高速公路航空摄影测量的作业流程、精度情况和相对于常规公路航空摄影测量作业的优点,为公路航空摄影外业地面工作提出一种新方案。展开更多
文摘To realize the data synchronization between the inertial measurement unit （IMU） and the global positioning system （GPS）, the synchronization technology in the IMU/GPS integrated measurement system of vehicle motion parameters is studied. According to the characteristics of the output signals of the IMU and the GPS, without the IMU synchronization signal, the synchronization circuit based on CPLD is designed and developed, which need not alter the configurations of the IMU and GPS. Experiments of measuring vehicle motion parameters, which rely on the synchronization circuit to realize IMU/GPS data synchronization, are made. The driving routes in experiments comprise a curve and a straight line. Experimental results show that the designed circuit can accurately measure the synchronization time difference and the IMU period, and can effectively solve the data synchronization in IMU/GPS integration. Furthermore, the IMU/GPS integrated measurement system based on the synchronization circuit can measure and calculate many vehicle motion parameters in high frequency mode.
文摘据英国简氏防务2011年9月13日报道，今年英国的古德里奇公司在伦敦会展中心（Exhibition Center of London，ExCel）推出了一种名为μNav的新型微型导航装置。μNav集成了MiniM微型惯性制导装置和GPS芯片，是一种高性能IMU／GPS复合导航装置。早在2009年的英国国际防务展（Defense ＆ Security Equipment Internation，DESi）上，该公司曾披露过MiniM微型惯性制导装置。
文摘简单的介绍精密单点定位(PPP-Precise Point Positioning)和辅助航空测量技术,并进行了利用精密单点定位技术进行IMU/GPS系统数据处理试验。分析了精密单点定位技术的定位精度,IMU/PPP联合处理的精度,对结果进行了分析,总结了采用精密单点定位技术进行高速公路航空摄影测量的作业流程、精度情况和相对于常规公路航空摄影测量作业的优点,为公路航空摄影外业地面工作提出一种新方案。
