A Method for Azimuth Angle Jumping Instantaneously in Radar Tracking Coordinate

Azimuth mutation is a particular situation in the radar coordinate system, ending up with the tracking algorithm diverges and the tracking performance reduces. Aiming at this problem, this paper substitutes the combined values of azimuth angel’s cosine and sine function for the azimuth angel in radar measurement. Since the covariance matrix of the modified measurement is a singular matrix, the diagonal matrix composed of the azimuth variance is used to replace the covariance matrix of the two trigonometric functions. The simulation results show that the correction measurement and its replacement of covariance matrix have little effect on the tracking accuracy, and even in the case of sudden angle change, the tracking algorithm combined with the modified measurement data can also achieve stable tracking of the target.

TN911