Different from the conventional imaging methods, the correlated imaging is an emerging technology which realizes the separation of the detection from the imaging. The correlated imaging broads the application prospect in the field of radar imaging, and brings new ideas for the development of radar imaging. We introduce the implementation approaches of the stochastic radiation field, and lay special stress on analyzing one of them. The variation trend of radiation field by changing the model parameters is analyzed, and the influence of signal bandwidth and scatter point spacing on image resolution is elaborated. The research results can play reference for the parameter setup of radar correlated imaging system.