The spatial-temporal joint anti-jamming technology is an important research direction of GNSS receiver. ADC quantization will cause loss of GNSS receiver anti-jamming performance. The quantitative loss analysis model of GNSS receiver anti-jamming performance is given, The quantization loss caused by limiting amplitude and finite register length to Power Inversion Global Optimum Spatial-Temporal Anti-Jamming GNSS Receiver are analyzed by simulation, and the proposed parameters of quantization bit number and limiting amplitude electrical level are given.