Method for resisting backward dispersion for laser semi-active seeker

A backscattering, semi-active technology, used in projectiles, self-propelled missiles, offensive equipment, etc., can solve problems such as large seeker influence, laser attenuation, tracking, etc., to enhance capture accuracy, improve signal-to-noise ratio, A wide range of useful effects

Active Publication Date: 2013-06-12
CAIHONG DRONE TECH CO LTD
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Problems solved by technology

[0003] However, the main disadvantage of the laser seeker is that it is greatly affected by the atmospheric environment. The absorption and backscattering of the laser by clouds, rain and snow will interfere with the normal work of the seeker.
Atmospheric molecules and atmospheric suspended matter are composed of water droplets an

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  • Method for resisting backward dispersion for laser semi-active seeker
  • Method for resisting backward dispersion for laser semi-active seeker
  • Method for resisting backward dispersion for laser semi-active seeker

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Embodiment Construction

[0025] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The laser semi-active seeker uses the laser diffusely reflected by the target to automatically search, intercept and track fixed / moving targets on the ground. However, the echo signal formed by atmospheric backscattering may interfere with the seeker's capture of the target signal, so suppressing the interference of atmospheric backscattering is an important problem to be solved by the laser semi-active seeker. The invention provides a method, using the range gate technology to suppress atmospheric backscattering, which has the beneficial effect of being able to overcome laser backscattering, Improve the signal-to-noise ratio of the laser imaging system, accurately detect target information, and effectively improve the capture accuracy of the laser semi-active seeker.

[0027] according to figure 2 As shown, sequence A is the...

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Abstract

The invention discloses a method for resisting backward dispersion for a laser semi-active seeker. The laser semi-active seeker is used for automatically searching, intercepting and tracking a ground fixed/moving target by the adoption of diffuse-reflected laser of a target. Laser on a transmitting path is attenuated due to suspended matters in the atmosphere, and an echo signal formed by backward dispersion of the atmosphere may interfere the capture of a target signal by the seeker. According to the method, the technology of wave gate is used for dividing the backward dispersion light and the target reflection light in different distances according to a sequence of time, so that the target reflection light is enabled to reach and image in gating time of a laser receiver, and the seeker is ensured to accurately capture target echo. By the adoption of the method for resisting backward dispersion, the seeker can be used for overcoming backward dispersion in bad weather conditions of low brightness, poor atmosphere transmission characteristics or serious backward dispersion and the like, thus a signal-to-noise rate of laser imaging is improved, and the function of filter on an interference target is further provided.

Description

technical field [0001] The invention relates to an anti-backscattering method for a laser semi-active seeker. The interference caused by atmospheric backscattering to the target signal captured by the seeker can be suppressed by using the range gate technology. It is mainly used in the laser semi-active seeker. use on. Background technique [0002] When the laser seeker is working, the airborne laser irradiator first emits a laser beam to the target, and then uses the laser detector to receive and process the laser signal reflected by the target, and finally completes the target detection. Taking ranging as an example, the missile's distance from the target is calculated by measuring the time required from the emission of a laser pulse to the reception of the reflected laser pulse from the target. The main factors affecting its accuracy are laser pulse width and circuit time resolution or delay. Since the laser pulse width can be set to nanosecond level, with the improvemen...

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Application Information

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IPC IPC(8): F42B15/01
Inventor 郝治国王德爽
Owner CAIHONG DRONE TECH CO LTD
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