The invention discloses a temporal difference
radar interference method applicable to large-gradient ground surface settlement monitoring. According to the whole technical scheme, the method comprises the steps of short-time
base line difference interference pattern screening, discrete point
phase unwrapping, shape changing
component modeling and calculation based on short-time
base line difference interference patterns, shape changing component reliability testing, difference interference pattern
phase gradient correction, iteration of the processes so as to ensure
correctness of shape changing component calculation, and shape changing
time sequence modeling and calculation based on corrected difference interference patterns. The problem that shape changing phase
ambiguity calculation is difficult or fails due to the fact that shape changes and phase gradients are large in an original temporal difference
radar interference technology is solved, finally the purpose of correctly extracting the large-gradient ground
surface shape changing speed and the shape changing
time sequence is achieved, the effect of decreasing the number of
synthetic aperture radar images needed by large-gradient shape changing modeling and calculation is achieved, and the temporal difference
radar interference application economic cost is reduced.