Abstract

Microwave staring correlated imaging (MSCI) is an imaging method that forms a temporal-spatial stochastic radiation field (TSSRF) and correlates the echo with the known stochastic radiation field to obtain target scattering information. The randomness of TSSRF is the necessary condition for MSCI, and analyzing the spatio-temporal randomness of correlated imaging is the basis for optimizing radar parameters. This paper first introduces the multiple-input multiple-output (MIMO) system into radar correlation imaging for increasing radar detection channels. Then we construct the spatial ambiguity function of MIMO to analyze the randomness of the radiation field in MIMO MSCI. Finally, we analyze the influence of the receiving array geometry and different compounding methods of the multi-channel signal on the randomness of the radiation field and the imaging quality. Simulation experiments verify the relationship between the space-time randomness in MIMO MSCI and transceiver aperture and the compound of the received signals.

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