旋转加速度计重力梯度仪标度因数调整算法与仿真研究

发布时间：2019-05-12 20:12

【摘要】：旋转加速度计重力梯度仪在能源勘探、大地测量等领域都起着举足轻重的作用,近些年发展迅速。但加速度计标度因数的不匹配性对梯度仪的测量精度造成很大干扰。本文基于旋转加速度计重力梯度仪仿真系统实现了加速度计标度因数调整方法的设计。主要研究内容和成果如下：设计了旋转加速度计重力梯度仪仿真系统,包括对仿真系统中硬件的软件化编程、数据接收端的实时初始相位求解模块设计、数据接收端标度因数调整量反馈模块设计、数据发送端实时接收反馈数据模块设计、标度因数调整模块设计等。系统性能测试结果表明各模块能够相互连通、处理正确,软件部分界面友好、简洁易操作。详细介绍了标度因数理论调整方法,包括初始相位的实时求解方法、数据解调方法、PID控制反馈标度因数调整量方法。该方法能正确实现标度因数的调整。采用了两组数据作为源数据和四组数据作为源数据两种方法对加速度计标度因数进行调整。分别利用这两种方法在重力梯度仿真系统平台上进行仿真,实验结果表明,这两种方法都可以实现加速度计标度因数的调整并达到精度要求。本文基于重力梯度仪仿真系统提出的加速度计标度因数调整方法对旋转加速度计重力梯度仪的研制具有重要参考价值。
[Abstract]:Rotating accelerometer gravity gradiometer plays an important role in energy exploration, geodesy and other fields, and has developed rapidly in recent years. However, the mismatch of accelerometer scale factor causes great interference to the measurement accuracy of gradiometer. In this paper, the adjustment method of accelerometer scale factor is designed based on the simulation system of rotating accelerometer gravity gradiometer. The main research contents and achievements are as follows: the simulation system of rotating accelerometer gravity gradiometer is designed, including the software programming of the hardware in the simulation system and the design of the real-time initial phase solution module at the data receiver. The design of the feedback module of the scale factor adjustment at the data receiving end, the design of the real-time receiving feedback data module of the data sender, the design of the scale factor adjustment module and so on. The results of system performance test show that the modules can be connected with each other, the processing is correct, the interface of the software is friendly, and it is simple and easy to operate. The adjustment method of scale factor theory is introduced in detail, including the real-time solution method of initial phase, the method of data demodulation and the method of PID control feedback scale factor adjustment. This method can correctly realize the adjustment of scale factor. Two sets of data as source data and four sets of data as source data are used to adjust the scale factor of accelerometer. The two methods are used to simulate the gravity gradient simulation system platform respectively. the experimental results show that the two methods can adjust the scale factor of accelerometer and meet the accuracy requirements. In this paper, the adjustment method of accelerometer scale factor based on gravity gradiometer simulation system has important reference value for the development of rotating accelerometer gravity gradiometer.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH824.4

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