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Target positioning method for correcting angle measurement error based on echo Doppler information

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: 2018-05-08
BEIJING INST OF REMOTE SENSING EQUIP
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  • Abstract
  • Description
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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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  • Target positioning method for correcting angle measurement error based on echo Doppler information

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Embodiment Construction

[0037] The specific steps of a target positioning method for correcting angle measurement errors based on echo Doppler information are as follows:

[0038] The first step is to build a target positioning system based on echo Doppler information to correct angle measurement errors

[0039] A target positioning system for correcting angle measurement errors based on echo Doppler information, including: a data acquisition module and a target positioning module. Said:

[0040] The function of the data acquisition module is: to acquire target Doppler frequency and inertial navigation measurement information;

[0041] The function of the target positioning module is to calculate the target position.

[0042] 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 angle of constant, then a velocity vector with the projectile center of mass M as the vertex can b...

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Abstract

The invention discloses a target positioning method for correcting an angle measurement error based on echo Doppler information, and the method comprises the steps: constructing a target positioning system for correcting an angle measurement error based on echo Doppler information, wherein the constructed system comprises a data obtaining module and a target positioning module; obtaining the target Doppler frequency and inertial navigation measurement information through the data obtaining module, and resolving the target position through the target positioning module. The method can achieve the accurate resolving of the target position on the basis of a target angle measurement error comprising an error through the echo Doppler information and inertial navigation measurement information,and provides guidance for the precise striking of a missile.

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...

Claims

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Application Information

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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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