Ϊ��ø��õ������˳����������Ľ���һ����״ģ�ͣ���ȫ���������ݶ�����ˮƽ���������˹�������������� FFT �� PSD �ֱ�Լ������������ (Vxx1��Vxy1��Vyy1) ����Ƶ�׷���������Ƶ�׷�������ֱ�����˰�����˹��ͨ�˲����͸�˹��ͨ�˲����Լ������ݽ����˲���ȡ���˽Ϻ�Ч���������ø���ģ����֤�˲�Ч����

In order to obtain a better method for noise filtering ��this paper establishes a spherical model�� adding Gauss white noise into the three horizontal components of full tensor gravity gradient data��and using FFT and PSD to analyse spectrum of the three component which are added noise (Vxx1��Vxy1��Vyy1)�� According to the results of spectral analysis�� we design Butterworth low pass filter and Gaussian low pass filter to filter the false data�� and achieve a good result and use complex model to verify the effect of filtering��