SAR Observation Error Estimation Based on Maximum Relative Projection Matching

Table 1

Performance comparison of four methods.

	Point-by-point method	Subaperture method	Phase error correction method	Proposed method
MSE of location	1.014e − 04	4.382e − 04	2.632e − 04	1.298e − 04
MSE of imaging result	1.232e − 05	3.612e − 05	1.936e − 05	1.359e − 05
Computation complexity
Elapsed time	11768.25 s	2520.67 s	4122.53 s	516.19 s