| 摘要: |
| 针对资源勘探等高精度应用对航空重力仪测量精度和分辨率的更高要求，在前期研究基础之上，研发了新一代采用“捷联+平台”方案的新型航空重力仪。设计了采用石英挠性加速度计和光纤陀螺的捷联式重力仪，采用了新型温度控制方案，提高了重力仪的环境适应能力。设计了稳定平台，将捷联式重力仪保持在垂直方向，隔离载机的角运动干扰，减小了重力传感器的动态误差。飞行试验表明，该方案是有效的，将航空重力仪的精度和分辨率提升到优于1mGal/3km。 |
| 关键词: 航空重力测量 捷联式重力仪 稳定平台 飞行实验 |
| DOI： |
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| 基金项目: |
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| The New Airborne Gravimeter Using the “Strapdown+Platform” Scheme |
| WU Mei-ping,ZHOU Xi-hua,CAO Jv-liang,ZHANG Kai-dong,CAI Shao-kun,YU Rui-hang,WANG Ming-hao,TIE Jun-bo |
| (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China;China Aero Geophysical Survey and Remote Sensing Center, Beijing 100083, China) |
| Abstract: |
| Aiming at the need of application such as resource exploration for better accuracy and resolution airborne gravimeter, a new airborne gravimeter using the “strapdown + platform” scheme is developed on the former research basis.The strapdown gravimeter using quartz flexible accelerometer and fiber optic gyroscope(FOG) is designed, and the environmental adaptability is improved by adopting the new thermal control scheme.The designed stable platform can keep the strapdown gravimeter vertical, insulate the angular motion disturbance, and reduce the dynamic error of the gravity sensor.The result of flight test showes that this scheme is effective and the accuracy and resolution of airborne gravimeter are better than 1mGal/3km |
| Key words: Airborne gravimetry Strapdown gravimeter Stable platform Flight test |
