Correction of Channel Imbalance for MIMO SAR Using Stepped-Frequency Chirps

Table 2

Channel errors (CE).

Channel (𝑚, 𝑛)	Exact CE		Estimated CE for simulated data		Estimated CE for constructed raw data
	𝐴𝑘	𝜑𝑘 (°)	𝐴𝑘	𝜑𝑘 (°)	𝐴𝑘	𝜑𝑘 (°)
1, 1	1	0	1	0	1	0
1, 2	1.3	25	1.296	24.308	1.253	28.201
2, 1	1.5	30	1.500	29.649	1.468	33.325
2, 2	1.4	45	1.401	44.426	1.352	42.720