A direction-only path planning method for two-machine cooperative target tracking and positioning

Abstract

The invention discloses a pure orientation double-machine cooperation target tracking and positioning path planning method, and provides an optimization algorithm which is based on an extended Kalman filter (EKF) and geometric dilution of precision (GDOP) aiming at a pure orientation double-machine cooperation three-dimensional target tracking and positioning path planning problem. The method comprises the steps of respectively building interactive information and covariance control index function on the basis of building the double-machine cooperation passive tracking EKF. In order to overcome the over-dependence of the EKF-based index function on a target model, the GDOP-based index function from the view of target location is established. After the EKF-based index function is combined with the GDOP-based index function, a double-machine cooperation path planning model with a standard form by considering the constraint conditions is established, and the concrete model solving steps are provided. The method realizes the closed loop of sensor observation, optimizing index establishment and path planning resolving, effectively improves the tracking and positioning capability of double machines for a non-motorized radiation source and a motorized radiation source, and finally improves the accuracy of double-machine cooperation passive tracking and positioning.

Description

technical field [0001] The invention belongs to the field of information technology, and relates to a direction-only two-machine cooperative target tracking and positioning path planning method. Background technique [0002] The rapid development of radar countermeasures such as electronic countermeasures, stealth aircraft, and anti-radiation missiles has made active positioning systems represented by active radar more and more seriously threatened. Compared with the active positioning system, the passive observation system has the advantages of good concealment and strong survivability because it does not radiate electromagnetic signals, but tracks and locates the target by acquiring visible light, infrared or electromagnetic signals radiated by the target. [0003] The passive observation system can only report the target's arrival azimuth and arrival time, especially in complex electromagnetic environment conditions, the arrival azimuth is almost the only reliable radiati...

AI Technical Summary

Problems solved by technology

At present, there are many studies on the tracking and positioning accuracy analysis of the dual-aircraft cooperative azimuth-only passive tracking and positioning system, but there are few reports on the use of tracking and positioning accuracy analysis results to guide the dual-aircraft flight path planning.

Images