According to the relevant theory of optical transfer function (OTF), the OTF and point spread function of coherent field imaging technology (also known as Fourier telescopy) are derived. The formulas for calculating the resolution power of coherent field imaging system with T type and O type transmitter arrangement are given, which provides a theoretic basis of analyzing the limited angle resolution of coherent field imaging system. Based on this study, the relationship between resolutions of the coherent field imaging system with T type and O type transmitter arrangement is investigated.