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1. WO2022006862 - LASER RECEIVING CIRCUIT AND LASER RADAR

Publication Number WO/2022/006862
Publication Date 13.01.2022
International Application No. PCT/CN2020/101371
International Filing Date 10.07.2020
IPC
G01S 7/486 2020.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
483Details of pulse systems
486Receivers
G01S 17/06 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
Applicants
  • 深圳市速腾聚创科技有限公司 SUTENG INNOVATION TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 周小军 ZHOU, Xiaojun
Agents
  • 北京恒博知识产权代理有限公司 BEIJING HENGBO INTELLECTUAL PROPERTY AGENT LTD.
Priority Data
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LASER RECEIVING CIRCUIT AND LASER RADAR
(FR) CIRCUIT DE RÉCEPTION LASER ET RADAR LASER
(ZH) 激光接收电路和激光雷达
Abstract
(EN) A laser receiving circuit and a laser radar, which belong to the field of laser radars. A direct-current biasing circuit (402) is added to the laser receiving circuit; and the direct-current biasing circuit (402) loads a reverse direct-current voltage signal to an input port of an analog-to-digital converter (403), so as to make the baseline of an input voltage signal of the analog-to-digital converter (403) move downwards, such that an input dynamic range of the analog-to-digital converter (403) can be increased and a gain of a front-end amplifier circuit (401) can be increased, thereby increasing the signal-to-noise ratio of the laser receiving circuit and improving the distance measurement performance.
(FR) L'invention concerne un circuit de réception laser et un radar laser, qui appartiennent au domaine des radars laser. Un circuit de polarisation à courant continu (402) est ajouté au circuit de réception laser ; et le circuit de polarisation à courant continu (402) charge un signal de tension à courant continu inverse dans un port d'entrée d'un convertisseur analogique-numérique (403), de manière à abaisser la ligne de base d'un signal de tension d'entrée du convertisseur analogique-numérique (403), de sorte qu'une plage dynamique d'entrée du convertisseur analogique-numérique (403) puisse être augmentée et qu'un gain d'un circuit amplificateur d'extrémité avant (401) puisse être augmenté, ce qui permet d'augmenter le rapport signal sur bruit du circuit de réception laser et d'améliorer la performance de mesure de distance.
(ZH) 一种激光接收电路和激光雷达,属于激光雷达领域。在激光接收电路中增加直流偏置电路(402),直流偏置电路(402)在模数转换器(403)的输入端口上加载反向直流电压信号,使模数转换器(403)的输入电压信号的基线下移,可以增加模数转换器(403)的输入动态范围,增加前级的放大电路(401)的增益,进而提高激光接收电路的信噪比,增加测距性能。
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