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Networking radar residence time optimization control method based on radio frequency stealth

A dwell time and optimized control technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of increasing beam dwell time, unfavorable radar radio frequency stealth performance, and increasing the probability of radar detection, so as to improve radio frequency stealth performance , Guarantee the effect of tracking accuracy and detection probability

Pending Publication Date: 2020-05-01
NO 8511 RES INST OF CASIC
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  • Claims
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Problems solved by technology

However, increasing the beam dwell time will increase the probability of the radar being detected by the passive detection system, which is detrimental to the radar's radio frequency stealth performance

Method used

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  • Networking radar residence time optimization control method based on radio frequency stealth
  • Networking radar residence time optimization control method based on radio frequency stealth
  • Networking radar residence time optimization control method based on radio frequency stealth

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Embodiment 1

[0071] The specific implementation strategy of multi-target tracking by using the present invention can be briefly described as follows: first, at time k, the target state is estimated by the Kalman filter (EKF) algorithm according to the measurement information of each target, and then the control is optimized according to the proposed dwell time The algorithm obtains the optimal result of radar allocation index and dwell time at time k+1 and gives feedback. Each radar guides the radar launch at time k+1 according to the feedback information. The specific steps are as follows:

[0072] 1. Airborne radar network observation model construction and target state initialization

[0073] Considering that the airborne radar network includes N space-, time-, and frequency-synchronized airborne two-coordinate phased array radars, each radar can only receive echo signals from its own transmitted signals, and a single radar can only track at most One target; the airborne radar network t...

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Abstract

The invention discloses a networking radar residence time optimization control method based on radio frequency stealth. The method comprises the following steps of (1) an airborne radar network comprises N airborne two-coordinate phased array radars with synchronous space, time and frequency, Q uniform motion targets in a two-dimensional plane are tracked, and an observation model of the airborneradar network and a motion model of the targets are constructed; (2) a BCRLB of a target state estimation error during uniform motion target tracking is acquired, and a lower bound of a target position estimation mean square error is extracted from the BCRLB to serve as a measurement index of target tracking precision; (3) according to a predicted echo signal-to-noise ratio, the predicted detection probability of the airborne radar network for the tracked targets is calculated; (4) an optimization control model for minimizing airborne radar network residence time is constructed, and on the premise that the predicted tracking precision and the predicted detection probability of all the targets meet constraint conditions, the total residence time of the airborne radar network is minimized; and (5) a two-step decomposition method is adopted to solve the optimization control model.

Description

technical field [0001] The invention belongs to electronic countermeasure technology, and in particular relates to a radio frequency stealth-based networked radar dwell time optimization control method. Background technique [0002] Aircraft radio frequency stealth technology refers to reducing the ability of passive detection equipment to intercept, sort, and identify radio frequency signals by reducing the radio frequency signal characteristics of active electronic equipment such as airborne radar and data links. As an important active stealth technology, aircraft radio frequency stealth technology is aimed at reducing the interception probability and interception distance of the passive detection system, and improving the anti-reconnaissance and anti-jamming capabilities of the radar, so as to ensure that fighter jets can detect the enemy first, strike the enemy first, An important means of destroying the enemy first. [0003] Since a single airborne phased array radar c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 佘季姜磊吴明宇刘建洋王琦吕超峰
Owner NO 8511 RES INST OF CASIC
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