Variable data rate tracking method of rotary phased array radar based on target prior parameters

A priori parameter and rotation phase technology, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve target loss of tracking, waste of time and resources of distant targets, and no consideration of target prior parameters and the current situation and other issues, to achieve the effect of less time resources and less cost

Pending Publication Date: 2022-04-12
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

[0009] In order to solve the traditional adaptive resource optimization allocation method, the tracking data rate is calculated according to the residual, without considering the prior parameters of the target and the current situation. The target will

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  • Variable data rate tracking method of rotary phased array radar based on target prior parameters
  • Variable data rate tracking method of rotary phased array radar based on target prior parameters
  • Variable data rate tracking method of rotary phased array radar based on target prior parameters

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[0031] Target at right angle coordinate system under the Radar Tracking (X m (n), y m (n), z m (n)) The measured value cannot be obtained directly, because the radar measurement is completed under the ball coordinates (0 ° in the north direction, the orientation clockwise from 0 ° to 360 °), the measurement equation is linear equation in the ball coordinate system In the right angle coordinate system, it is a non-linear equation. The target motion equation is described in the right angle coordinate system that requires the measurement value of the ball coordinate to the right angle coordinate system to re-use the α-β filter algorithm.

[0032] If you do not lose general, assuming that the speed of the antenna is 30 rpm, the antenna period 1 may track the point of A, B, C, and the antenna period 2 may track points D, E, F, due to the limit of the antenna rotation and the electron beam offset scan, The deflection of the phase-controlled radar is usually within 60 degrees, but the sc...

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Abstract

The invention relates to a variable data rate tracking method of a rotating phased array radar based on target prior parameters, which is characterized in that the rotating phased array radar is limited by antenna area array rotation and electronic beam offset, when a target is located on the back of an antenna area array, the beam of the radar cannot irradiate the target, each antenna period has a window period of target tracking, and the target is tracked in the window period. Therefore, the residual error-based adaptive tracking resource allocation algorithm capable of continuously valuing is not suitable for the rotary phased array radar. On the basis of Cohen research, a variable data rate tracking method based on target priori parameters is provided and applied to rotating phased array radar target tracking, the maximum tracking residual error generated by target maneuvering of a target at the current distance is calculated in real time based on the priori parameters of the target, including the maximum maneuvering acceleration and the maximum navigational speed of the target, and the maximum tracking residual error generated by target maneuvering of the target at the current distance is calculated in real time. According to the method, the coverage of the tracking beam width of the radar on the target is ensured, the maximum tracking data rate is calculated, and the minimum tracking resource is used on the premise of considering the target tracking stability.

Description

technical field [0001] The invention relates to a method for optimally allocating tracking task resources of a rotating phased array radar. Background technique [0002] Phased array radar uses an array antenna with beam agility, which can perform various tasks such as search, target tracking, and guidance. Optimal scheduling of resource usage. The optimization of phased array radar resource scheduling mainly involves three directions: [0003] 1. Task conflict resolution: If multiple heterogeneous tasks compete for the same time slice resource, based on the task time window and priority under the constraints of scheduling policies, various adaptive beam scheduling algorithms are used to make the system execute as many tasks as possible within a limited time . Priority-based scheduling methods mainly include earliest deadline first (EDF for short), least slack first (LSF for short), earliest release top priority, earliest deadline first top priority, and highest value St...

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Application Information

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IPC IPC(8): G01S13/72
Inventor 李纪三吴少鹏耿利祥张海龙程玉堃
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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