Abstract:This paper introduces the basic principle of strapdown airborne gravity vector measurement, and uses wavenumber correlation filtering (WCF) and specific force linearity correction method to compensate the horizontal and vertical components of gravity disturbance. It then evaluates the internal accuracy. The test data of the domestic strapdown airborne vector gravimeter is processed and analyzed to verify and evaluate the performance of airborne vector gravimeter. The results show that after applying wavenumber correlation filter for the horizontal component of gravity disturbance of the six repeatlines, the average internal accuracy of the east and the north components increases from 9.77 mGal and 9.18 mGal, to 5.95 mGal and 3.83 mGal, respectively, with half-wavelength resolution of 7.5 km. After linear correction for the vertical component of specific force, WCF method is used to process the vertical component of gravity disturbance of the repeatlines. The average internal accuracy of the vertical component of gravity disturbance is improved from 1.27 mGal to 0.59 mGal.