Research on localization of platform-based airborne gravity exploration system
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摘要: 针对深地资源勘探等应用对航空重力测量精度的要求,在前期研究基础上,研制并集成了平台式航空重力勘查系统。该系统为“三轴稳定平台+石英挠性摆式加速度计的平台式航空重力仪,重力仪采用自标定技术和平台姿态误差实时估计和修正技术,并配备了导航定位系统、减振系统、无人值守系统和数据处理软件等。飞行测量数据表明:平台式航空重力勘查系统多架次重复线飞行数据的内符合精度优于0.6×10-5 m/s2(100 s),测量精度达到国际先进水平,可以实现航空重力测量技术装备国产化。
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关键词:
- 平台式重力仪 /
- 航空重力测量 /
- FIR低通滤波 /
- 卡尔曼(Kalman)滤波
Abstract: To meet the accuracy requirements of airborne gravity surveys for deep resource exploration, an airborne gravity survey platform has been developed and integrated based on previous research. The platform system is an airborne gravimeter platform consisting of a three-axis stabilized platform and a quartz flexible pendulum accelerometer. It adopts self-calibration technology and the real-time error estimation and correction technology of platform attitude. Meanwhile, it is equipped with a navigation and positioning system, a vibration reduction system, an unattended system, and data processing software. Flying survey data show that the internal coincidence accuracy of the repeated-line flight data of the airborne gravity survey platform is less than 0.6×10-5 m/s2(100 s), reaching the international advanced level. Therefore, this platform allows the technology and equipment of airborne gravity surveys to be localized. -
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