A Review of Correction Methods for Atmospheric Phase Perturbation of Antenna Array in Deep-space Exploration

Real-time correction of atmospheric phase perturbation is the key technique for the synthesis of weak signal in the antenna array of deep space exploration. Firstly, principle and characteristics of atmospheric phase perturbation are studied, and effects of the ionosphere and troposphere on the phase perturbation are compared and analyzed. Research status of the tropospheric delay model at home and abroad is summarized, and shortcomings of its application in real-time correction of phase perturbation are analyzed. Differences and similarities between different correction methods of deep space exploration and radio astronomy antenna array are described, and a comparative study is made on the basis of the measurement of the atmospheric phase perturbation correction technology of deep space array. At last, shortcomings of several commonly used correction techniques are summarized; a combination of multiple measurement methods is proposed and the prospect of the high frequency phase delay is discussed.