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Adaptive control method of radar transmit power for dynamic rcs of stealth target

A technology of transmitting power and radar, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as poor practicability, achieve the effect of good practicability and reduce peak power

Active Publication Date: 2020-09-04
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the shortcomings of poor practicability of existing radar transmission power control methods, the present invention provides a radar transmission power adaptive control method for dynamic RCS of stealth targets

Method used

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  • Adaptive control method of radar transmit power for dynamic rcs of stealth target
  • Adaptive control method of radar transmit power for dynamic rcs of stealth target
  • Adaptive control method of radar transmit power for dynamic rcs of stealth target

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Embodiment Construction

[0050] The specific steps of the radar transmission power adaptive control method for the stealth target dynamic RCS of the present invention are as follows:

[0051] 1. Calculate the best handover orientation based on the best radiation power with LPI function

[0052] ① Define the radar critical intercept distance.

[0053] In a given radar detection probability P D and false alarm probability P F Under the condition, the radar maximum detection range R Rmax It can be expressed as

[0054]

[0055] In the formula: P Rt is the radar transmit power; G Rt is the transmit gain of the radar antenna; G Rr is the receiving gain of the radar antenna; σ is the radar cross-sectional area (RCS) of the target; λ is the working wavelength of the radar, and k is the Boltzmann constant (1.38×10 -23 J / K); T 0 is the standard noise temperature (290K); B Rt is the radar receiver bandwidth; NF R is the noise figure; L R is the radar system loss; SNR Rmin is the minimum detectabl...

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Abstract

The invention discloses a radar transmitting power adaptive control method for dynamic RCS of a stealth target, which is used for solving the technical problem that an existing radar transmitting power control method is poor in practicability. According to the technical scheme, based on track information of the target, the position and orientation, with the maximum RCS value, of the target are selected to complete information handover between an air situation and a radar, so that the peak power of radar radiation is reduced; and then fusion type tracking is realized on the premise that a trackof the target is known, so that the PRF of radar signals is reduced, the average power of the radar is reduced, and the radar is difficultly discovered by RWR equipment of an opposite side. Accordingto the method, target handover, tracking and weapon guidance tasks are realized under the condition of low interception probability, so that the purpose of radar stealth is achieved; and therefore, the practicability is high.

Description

technical field [0001] The invention relates to a radar transmission power control method, in particular to a radar transmission power adaptive control method aiming at the dynamic RCS of a stealth target. Background technique [0002] The literature "Research on the Principle and Implementation Method of Radio Frequency Radiation Power Control, Modern Radar, 2015, Vol37(1), p17-20" discloses a method of radiation power of active phased array radar based on the intercept factor model. Based on the low intercept index such as intercept factor and intercept probability of radar countermeasure passive reconnaissance system, the method deduces the radar critical intercept distance formula and the transmission power under the critical intercept distance of radar, and gives the radar countermeasure passive reconnaissance system The regularity and adjustment range of the real-time transmission output power decrease with the decrease of the target distance, and the influence of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 羊彦侯静景省利夏佳能王梓卿景占荣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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