Photonic integrated interferometric imaging is an emerging imaging technology. It uses photonic integrated circuits to obtain the Fourier spectrum of the target. At present, energy loss and noise interference are the key factors restricting the development of this technology. To analyze their impact on photonic integrated interferometric imaging systems, this paper studies the relationship between the baseline length and the interference signal energy and the effect of noise on imaging quality. The results show that the energy of the output signal is at the nanowatt level. The amplitude and visibility of the interference signal decay sharply as the baseline length increases. The amplitude of the interference signal under the long baseline is extremely small. In the case of insufficient detector accuracy, the visibility of the interference signal cannot be obtained. Overall, the photonic integrated interferometric imaging systems are suitable for collecting low-frequency signals of the target. In addition, the noise controlled at 10^-3 of the interference signal strength and the phase error controlled at 1/40λ will not greatly affect the imaging result.