An orthogonal double accelerometer test method to calibrate quartzose flexible accelerometer on turntable is presented.The effect of turntable error resource on the test precision is analyzed

the identification model for g2 observation method is established

and the 20-situation-experiment is made.The test results show that the orthogonal double accelerometers test method can decrease the turntable error angle effect on the accelerometer model estimation result

and the test precision can be improved remarkably.