Missile attitude measuring method based on satellite navigation

Abstract

The invention provides a missile attitude measuring method based on satellite navigation. According to the missile attitude measuring method, spatial coordinates of a missile and a satellite are utilized for defining a ground deviating direction as a reference direction of missile rotation firstly; then the frequency and the phase of a modulating signal are estimated by means of a signal processing method; and finally rotating speed and rotating angle of the missile are estimated. The method comprises the following steps of 1, acquiring a signal; 2, processing a geometrical position signal; 3, estimating the frequency change range of the modulating signal by means of a difference method; 4, estimating the frequency of the modulating signal by means of discrete Fourier transform; 5, estimating the phase of the modulating signal; 6, calculating a parameter which describes rotating attitude of the missile; and 7, describing the attitude of the missile. The missile attitude measuring method overcomes defects of incapability of performing attitude measuring on a remote missile, requirement for prestoring missile track and storage space consumption in prior art. Application range of missile attitude measuring is expanded. Furthermore storage space consumption and processing time consumption are reduced.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a satellite navigation-based missile attitude measurement method in the technical field of satellite positioning and signal processing. The invention can use the space coordinates of the missile and the satellite to define the reference direction of the missile rotation, use the signal processing method to estimate the frequency and phase of the modulation signal, and finally determine the attitude of the missile rotation. Background technique [0002] Satellite navigation is a technology that uses satellites to precisely locate objects. At present, there are mature technologies using satellite navigation to obtain the space coordinates and flight direction of missiles. As for the estimation of the missile's rotational attitude, there is no mature solution yet. [0003] Interstate Electronics Corporation, Anaheim, CA (Us) has a patented technology "SYSTEMS AND METHO...

AI Technical Summary

Problems solved by technology

The shortcomings of this patented technology are: 1. When the missile is flying, it must be within the visible range of the same group of satellites

For long-range missiles, this approach is ineffective

2. Pre-store the missile track, which increases memory consumption and reduces processing speed

This method is also less effective if the missile is off course

Images