In order to solve the problem of high computational complexity and low anti-interference ability of space-time joint processing, a space-frequency joint processing mechanism is proposed in the field of satellite navigation and anti-jamming. The theoretical analysis and simulation show that the mechanism has a better anti-jamming performance. At the same time, through the comparison of three commonly used adaptive calculation methods, the best calculation method is chosen for the space-frequency joint processing mechanism in two aspects of convergence speed and computational complexity, so that its performance can be maximized.