A Target Location Method Based on Echo Doppler Information to Correct Angle Measurement Error

An echo Doppler and target positioning technology, which is applied in the field of target positioning to correct angle measurement errors, and can solve problems such as inability to measure angle normally.

Active Publication Date: 2021-04-09
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a target positioning method based on echo Doppler information to correct the angle measurement error, so as to solve the problem that the existing method cannot normally measure the angle when the radome is ablated and the electromagnetic wave refraction is introduced.

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  • A Target Location Method Based on Echo Doppler Information to Correct Angle Measurement Error
  • A Target Location Method Based on Echo Doppler Information to Correct Angle Measurement Error
  • A Target Location Method Based on Echo Doppler Information to Correct Angle Measurement Error

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Embodiment Construction

[0036] The specific steps of a target positioning method for correcting angle measurement errors based on echo Doppler information are as follows:

[0037] The first step is to build a target positioning system that corrects angle measurement errors based on echo Doppler information;

[0038] A target positioning system for correcting angle measurement errors based on echo Doppler information, including: a data acquisition module and a target positioning module.

[0039] The function of the data acquisition module is: to acquire target Doppler frequency and inertial navigation measurement information;

[0040] The function of the target positioning module is to calculate the target position.

[0041] Assuming that the missile uses the coherent accumulation system to detect the target, the missile-target vector in the same coherent accumulation cycle with velocity vector The included angle θ mt constant, then a velocity vector with the projectile center of mass M as the v...

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Abstract

The invention discloses a target positioning method for correcting angle measurement errors based on echo Doppler information. The method first constructs a target positioning system for correcting angle measurement errors based on echo Doppler information. The constructed system includes: a data acquisition module and The target positioning module obtains the target Doppler frequency and inertial navigation measurement information through the data acquisition module, and the target positioning module calculates the target position. The method of the invention can accurately calculate the target position by relying on the echo Doppler information and the inertial measurement information on the basis of the error-containing target angle measurement results, and provides guidance for precise strikes of missiles.

Description

technical field [0001] The invention relates to a target positioning method for correcting angle measurement errors, in particular to a target positioning method for correcting angle measurement errors based on echo Doppler information. Background technique [0002] The missile has a long flight range and high speed, and it also needs to perform orbital maneuvering flight with a large angle of attack in the atmosphere. The aerodynamic heating takes a long time and the thermal load is very bad, which makes the radome prone to ablation, refracts the incident electromagnetic wave, and affects the angle measurement of the antenna. function, while the traditional monopulse angle measurement method uses the amplitude value of the echo signal received by the antenna to measure the angle. When ablation occurs and electromagnetic wave refraction occurs, the angle cannot be measured normally. Therefore, it is necessary to find a method to correct the angle measurement error of the rad...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/411
Inventor 闫雅琼汤斌陈文东
Owner BEIJING INST OF REMOTE SENSING EQUIP
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