Spectrum shifting method is a new kind of high resolution imaging technology. The influence of the moving error and the field's noise, which may appear in practical application, has been discussed by simulation method combining theoretical derivation. Research shows that it can achieve the best effect with three times of scanning only. In the presence of system error or random error, the quality of processed image will decline along with the increase of scanning times. So the imaging result and velocity are not contradictory in this technology. Furthermore, the quality requirement to stripe field is not strict. Generally, the effect of processed image using noisy stripe field whoes SNR is from 15dB to 20dB is very close to the ideal effect.