In terms of the theoretical analysis

the cross correlation computation formula based on frequency difference coefficient was deduced

and two new cross correlation mitigation methods

called the parallel cross correlation subtraction and the parallel cross correlation subtraction based on frequency difference coefficient were addressed.By the tests in which one to three strong interference signals with the intensity of 16 to 30dB were simulated

the effects of the two cross correlation mitigation methods in high sensitivity GPS receivers were good and the practicality of them was higher.The parallel cross correlation subtraction method based on frequency difference coefficient had much advantage on computation quantity

and was able to accelerate the signal acquiring speed of high sensitivity receivers and make the receivers work well when receiving signals with much weaker intensity and lower signal noise ratio.