As the high-power amplifier nonlinear effect

the limited bandwidth of the navigation signal distortion increase

which would affect navigation signals in the power spectrum

and pseudo-code tracking accuracy.To address this issue

this paper established the generic model for analyzing navigation signals non-linear distortion

used out-of-band power loss

the correlation loss and the offset of zero-crossing of S-Curve to assess the impact on navigation system performance

and analyzed how the bandwidth restrictions and nonlinear effects impacted on Rectangular pulse shaped

SRC(Square Root cosine) pulse shaped

BPSK modulation and BOC modulation.