Sparse Recovery for Bistatic MIMO Radar Imaging in the Presence of Array Gain Uncertainties

Figure 3

The performance of the proposed method with large array gain uncertain (𝑀=𝑁=20, [𝜃_𝑡1,𝜃_𝑟1]=[8^∘,3^∘], [𝜃_𝑡1,𝜃_𝑟1]=[3^∘,8^∘], 𝑄=20, SNR = 10 dB, 𝜎_𝑡=𝜎_𝑟=0.8).

(a) Original image (𝑄=20)

(b) Direcet CS method (𝑄=20)

(c) CS with array gain uncertain constraint (𝑄=20)

(d) Robust Capon method (𝑄=500)