Radar handover time forecasting method and device based on Encke method

Abstract

The invention belongs to the technical field of missile early warning, and particularly relates to a radar handover time forecasting method and device based on an Encke method. The method comprises the following steps of: establishing a radar observation model according to the characteristics of the radar station for observing a target; forecasting the missile trajectory by using the forecasting method of Encke method; and acquiring the forecast data of the radar handover moment according to the radar observation model and the trajectory forecast data. According to the method, the radar cross-over time forecast data are obtained by establishing the radar observation model and applying the Encke method to trajectory forecast, the operand is small, the operation time consumption is short, and the calculation accuracy of the cross-over time and the state quantity is high; error analysis is provided, and an error ellipsoid at the time of the handover is described through a covariance matrix to carry out visual display; and simulation experiments show that compared with the traditional method, perturbation factors in missile movement are considered, long-time integration can be performed, operation time is short, calculation precision is high, and the method has high application value for forecasting of radar handover time.

Description

Technical field [0001] The invention belongs to the field of missile early warning technology, and in particular relates to a method and device for forecasting radar handover time based on Enke method. Background technique [0002] Ballistic missiles have a long range and great power. In response to this threat, missile early warning systems for missile defense have also been greatly developed in recent years. Since the flight time and distance of ballistic missiles in the free section account for more than 80% of the total trajectory, the free section has become the main process of missile early warning research. The missile has fast speed and long distance in the free section, and the detection range of a single radar is limited, and multiple radars are often required for early warning and tracking. In the multi-radar early warning, when the detection range of the current radar and the latter radar do not overlap, the radar handover time needs to be forecasted to improve the o...

AI Technical Summary

Problems solved by technology

The analytic geometry method regards the missile as a two-body movement, without considering the perturbation factors in the movement, the calculation is simple and the forecast is fast, but the forecast accuracy is not high

Although the numerical integration method considers the perturbation factors in the missile motion, it establishes a complex dynamic differential equation, which has high prediction accuracy but a large amount of calculation

Images