Method and device for correlative imaging guidance

A technology that correlates imaging and object images. It is used in the direction of space navigation vehicle guidance devices, measurement devices, photometry, etc. It can solve problems such as being susceptible to cloud and fog interference, and achieve high resolution.

Active Publication Date: 2019-04-26
BEIJING WUZI UNIVERSITY
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  • Abstract
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Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for correlative imaging guidance to provide accurate distance information of targets for image guidance, and overcome the technical problem that imaging under extremely weak light conditions is easily interfered by clouds and fog

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  • Method and device for correlative imaging guidance
  • Method and device for correlative imaging guidance
  • Method and device for correlative imaging guidance

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Time-of-flight technology is a laser ranging technology. The sensor emits modulated near-infrared light and reflects it when it encounters an object. The sensor calculates the distance of the scene being photographed by calculating the time difference or phase difference between the light emission and reflection to generate depth information.

[0027] Correlation imaging is an imaging method that reconstructs and calculates the target image through the c...

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Abstract

The embodiment of the invention provides a correlated imaging guidance method and apparatus. The method comprises: pulse laser is modulated by using a Hadamard matrix to generate a structural pulse light source; with the structural pulse light source and a high-speed barrel detector, a time-light intensity curve is obtained by spline interpolation; points at the time-light intensity curve are read and correlation operation is carried out to obtain an object image; and with the object image and the time-light intensity curve, distance information of a target is obtained. The correlated imaging guidance method has the beneficial effects: with combination of advantages of the flight time technology and calculation correlation imaging technology, correlation imaging with depth information is carried out on the target and precise distance information of the target is provided for image guidance; the imaging system is capable of realizing imaging at extremely weak light without being affected by cloud and mist interference and the resolution ratio is high; and a novel solving idea is provided for solving problems existing in existing image guidance.

Description

technical field [0001] The invention relates to an associated imaging guidance method of time-of-flight technology, in particular to an associated imaging guidance method and device. Background technique [0002] At present, the imaging guidance technologies mainly used and vigorously developed in the field of aircraft terminal guidance are infrared imaging guidance and laser imaging guidance. Infrared imaging is a real-time scanning infrared imaging technology. It detects radiation distribution images caused by small errors between the target and the background or radiation frequency differences. It is susceptible to natural and human interference, making the aircraft lose its target. Laser imaging is easily affected by clouds, fog and smoke, and cannot be used around the clock. At the same time, its imaging resolution is low, and it is difficult to image in extremely weak backgrounds, which also shortens the early warning distance. [0003] The current image guidance meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/10G01J1/42G01J11/00B64G1/24
CPCB64G1/24G01J1/42G01J11/00G01J2001/4238G01S17/10
Inventor 苏庆华
Owner BEIJING WUZI UNIVERSITY
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