One kind is "hard"; the methodofcorrections, namely carries on the adjustment compensation from the metering circuit the method.
一类是“硬”校正法，即从测量电路来进行校正补偿的方法。
2
The method can realize time variant merging automatically, result in simultaneous corrections both for phase and amplitude and avoid the influence of noise.
此方法可自动实现时变拼接，达到相位和振幅同时校正，而且能避免噪声的影响。
3
The relation between the error of nutation constant and the correctionsof declinations, proper motions calculated by chain method is analysed, and the method to correct this effect is considered.