  In moving-base gravity gradiometry, accelerometer mounting errors and
mismatch cause a rotating accelerometer gravity gradiometer (RAGG) to
besusceptible to its own motion. In this study, we comprehensively consider
accelerometer mounting errors, circuit gain mismatch, accelerometer linear
scale factors imbalances, accelerometer second-order error coefficients and
construct three RAGG models, namely a numerical model, an analytical model, and
a simplified analytical model. The analytical model and the simplified
analytical model are used to interpret the error propagation mechanism and
develop error compensation techniques. A multifrequency gravitational gradient
simulation experiment and a dynamic simulation experiment are designed to
verify the correctness of the three RAGG models; three turbulence simulation
experiments are designed to evaluate the noise floor of the analytical models
at different intensity of air turbulence. The mean of air turbulence is in the
range of 70 to 230 mg, the noise density of the analytical model is about 0.13
Eo/sqrtHz, and that of the simplified analytical model is in the range of 0.25
to 1.24 Eo/sqrtHz. The noise density of the analytical models is far less than
7 Eo/sqrtHz, which suggests that using the error compensation techniques based
on the analytical models, the turbulence threshold of survey flying may be
widened from current 100 mg to 200 mg.
