旋转加速度计重力梯度仪重力梯度信号仿真

Signal simulation of gravity gradient for gravity gradiometer of rotating accelerometer

在介绍旋转加速度计重力梯度仪仿真系统构成的基础上,依据旋转加速度计重力梯度仪测量原理,给出重力梯度信号仿真方法。信号仿真流程为:由计算机产生加速度计数字输出,经数模转换、模拟信号运算、放大、模数转换和数字解调,得到重力梯度数值。采用这种重力梯度信号仿真方法,可以详细研究旋转加速度计重力梯度仪的信号特征、参数调整、误差补偿以及信号处理方法,为重力梯度仪系统设计研发提供方法指导。

This paper presents the simulation system of gravity gradiometer of rotating accelerometer and,according to the working principle of gravity gradiometer of rotating accelerometer,puts forward the method for gravity gradient signal simulation. The process of simulating gravity gradient signal is as follows： digit signals of accelerometers are produced by computer and gravity gradient is obtained through digit and analog conversion,analog operation,amplification,filter,analog and digit conversion,and modulation. By using this simulation method,the signal characteristics,parameter adjustment,error compensation and signal processing method can be further studied,and the results can serve as references for gravity gradiometer instrument design and development.