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Phased array laser radar

A laser radar and phased array technology, applied in the field of radar detection, can solve the problems of high cost, mechanical rotating devices and optical systems prone to failure, etc.

Pending Publication Date: 2019-03-08
SUTENG INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of lidar device requires the use of multiple sets of laser transceivers and requires precise light adjustment calibration (usually done by hand), which is expensive and prone to failure of mechanical rotation devices and optical systems

Method used

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  • Phased array laser radar
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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0035] It should be noted that when an element is “fixed” to another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the descrip...

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PUM

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Abstract

The invention relates to a phased array laser radar. The radar comprises a laser emission mechanism and a laser receiving mechanism. The laser emission mechanism comprises a laser and a phased array unit. There is at least one laser and there is at least one phased array unit. The laser receiving mechanism comprises a receiving end optical unit and a laser receiver correspondingly arranged with the receiving end optical unit. The receiving end optical unit is used to receive an echo laser reflected by a tested object. On a laser emission end, the laser is cooperated with the phased array unit.The laser and the phased array unit carry out quantity matching setting according to a demand and are cooperatively used so as to carry out multi-dimensional scanning. A traditional mechanical rotation device is not needed, cost is low and measurement reliability is high. On a laser receiving end, the receiving end optical unit is cooperated with the laser receiver, the receiving end optical unitreceives the echo laser, and the laser receiver couples the echo laser, and carries out photoelectric conversion to obtain a measurement result based on a preset requirement.

Description

technical field [0001] The invention relates to the technical field of radar detection in automobile driving, in particular to a phased array laser radar. Background technique [0002] Lidar is a device that uses laser light for detection and ranging. Its principle is similar to that of radar or sonar, that is, the transmitting device transmits laser pulses to the target object, and the receiving device measures the delay and intensity of the return pulse to measure the distance and reflectivity of the target object. [0003] Traditional lidar usually uses a mechanical rotating device to perform 360-degree circular scanning, and integrates multiple sets of laser transmitters and receivers to cover multiple elevation angles at the same time. This lidar device requires the use of multiple sets of laser transceivers, and requires precise light adjustment calibration (usually done by hand), which is expensive, and both mechanical rotation devices and optical systems are prone t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481
CPCG01S7/481G01S7/4817
Inventor 邱纯鑫刘乐天
Owner SUTENG INNOVATION TECH CO LTD
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