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Coherent laser distance measuring instrument capable of obtaining target position information and ranging method thereof

A laser rangefinder, target position technology, applied in the direction of instruments, measuring devices, electromagnetic wave re-radiation, etc., can solve the problem of only obtaining distance information, and achieve the effect of intuitive theoretical formula and simple signal processing in practice.

Inactive Publication Date: 2007-09-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The disadvantage of this coherent range finder is that only the distance information of the target can be obtained

Method used

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  • Coherent laser distance measuring instrument capable of obtaining target position information and ranging method thereof
  • Coherent laser distance measuring instrument capable of obtaining target position information and ranging method thereof
  • Coherent laser distance measuring instrument capable of obtaining target position information and ranging method thereof

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.

[0034] Please refer to FIG. 3 first. FIG. 3 is a system structure diagram of a coherent laser range finder with interference image processing according to the present invention. As can be seen from the figure, the coherent laser range finder capable of obtaining target position information in the present invention includes a transmitter and a receiver, the transmitter is composed of a transmitting laser 1, an optical modulator 2, and a transmitting optical system 3, and the receiver includes a receiving optical system 5 , local oscillator laser 7, optical bridge 9, photodetector 10, phase-locked loop 12 and CCD camera 13, it is characterized in that two input ends of described optical bridge 9 connect receiving optical system 5 and local oscillator respectively Laser...

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Abstract

This invention relates to coherent laser range finder which can obtain target position information and its method of measuring distance. This cohere laser range finder uses continuous wave and cohere detection system. System includes transmitter and receiver. Transmitter is constructed of launching laser device, light modulator, launching optical system. Receiver is constructed of receiving optical system, local oscillator laser device, light bridging device, photo detector, phase locked loop, CCD pick-up camera and interference image manipulation software. Receiver gets transmission distance information by cohere detection, meanwhile uses backward wave and local oscillator light wave to get interference figure on the CCD pick-up camera, obtains target position information and target distance information by computer image processing and analysis, real-time controls machine electricity part of optical system, ensures launching telescope and receiving telescope of rangefinder to aim at target. This invention can implement cohere laser measuring distance of consummate function, largest measuring distance. This invention can be used for cohere laser correspondence.

Description

technical field [0001] The invention relates to laser ranging, which is a coherent laser ranging instrument capable of obtaining target position information and a ranging method thereof. While obtaining the distance information of the target, the laser rangefinder obtains the target position information through the processing of the interference image, and uses it as a feedback signal to adjust the electromechanical deflection device of the rangefinder in real time to ensure that the rangefinder's transmitting telescope and receiving The telescope is aimed at the target. The present invention can also be applied to coherent laser communication. The receiver can also obtain the position information of the communication partner while obtaining the transmission information. The position information of the communication partner controls the tracking system of the communication terminal to ensure the alignment between the receiving telescope and the transmitting telescope. see. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/06
Inventor 许楠刘立人刘德安孙建锋栾竹
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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