Laser radar apparatus and method for operating thereof

Patent metadata

Field	Value
Publication number	US-9733344-B2
Application number	US-201414517119-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Nov 25, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Provided herein a laser radar apparatus including a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction, wherein each of the plurality of light transmission and reception modules comprises a transmitter configured to deflect a laser beam and to irradiate the deflected laser beam to a target; and a receiver configured to receive the laser beam reflected from the target.

First claim

What is claimed is:

1. A laser radar apparatus comprising:
a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction, wherein each of the plurality of light transmission and reception modules comprises
a transmitter configured to deflect a laser beam and to irradiate the deflected laser beam to a target, and
a receiver configured to receive the laser beam reflected from the target, wherein

the plurality of light transmission and reception modules are divided into two or more groups, and the transmitters and receivers belonging to a group are driven in a different time frame from the transmitters and receivers belonging to other groups.

2. The apparatus according to claim 1 ,
wherein adjacent light transmission and reception modules are divided into different groups from one another.

3. The apparatus according to claim 2 ,
wherein, of the plurality of light transmission and reception modules, a first group comprising oddnumber th light transmission and reception modules based on a light transmission and reception module disposed at one side is operated in an Odd time frame, and a second group comprising evennumber th light transmission and reception modules based on the light transmission and reception module disposed at one side is operated in an Even time frame, the Odd time frame and the Even time frame not overlapping each other in a time domain.

4. A laser radar apparatus, comprising:
a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction, each of the plurality of light transmission and reception modules including
a transmitter configured to deflect a laser beam and to irradiate the deflected laser beam to a target, and
a receiver configured to receive the laser beam reflected from the target;

a signal reader configured to control the plurality of light transmission and reception modules to operate at different time periods from one another, and to read the signals received through laser beam transmission and reception from each of the plurality of light transmission and reception modules; and
an image processor configured to obtain at least one of a location, distance and image of the target based on the signals read.

5. The apparatus according to claim 4 ,
wherein the laser radar apparatus is connected to a moving object.

6. The apparatus according to claim 5 ,
wherein the plurality of light transmission and reception modules are arranged to be spaced by a predetermined distance based on a width direction of the moving object.

7. The apparatus according to claim 5 ,
wherein the plurality of light transmission and reception modules are arranged to be laminated based on a height direction of the moving object.

8. A method for operating a laser radar apparatus, the method comprising:
dividing a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction into two or more groups;
the two or more groups divided transmitting and receiving a laser beam to and from a target in different time frames from one another;
reading signals received as the laser beam is transmitted and received; and
obtaining at least one of a location, distance, and image of the target based on the signals read.

9. The method according to claim 8 ,
wherein the transmitting and receiving a laser beam to and from a target comprises:
each of the plurality of light transmission and reception modules generating a laser beam;
deflecting the generated laser beam and irradiating the deflected laser beam to the target; and
detecting the laser beam reflected from the target as the laser beam is irradiated.

10. The method according to claim 8 ,
wherein the dividing a plurality of light transmission and reception modules into two or more groups involves dividing the plurality of light transmission and reception modules such that adjacent light transmission and reception modules are divided into different groups from one another.

11. The method according to claim 10 ,
wherein the dividing a plurality of light transmission and reception modules further comprises differentiating oddnumber th light transmission and reception modules based on a light transmission and reception module disposed at one side as a first group, and differentiating evennumber th light transmission and reception modules based on the light transmission and reception module disposed at one side as a second group,
the first group operating in an Odd time frame, the second group operating in an Even time frame, and the Odd time frame and the Even time frame not overlapping each other in a time domain.

12. The method according to claim 11 ,
wherein the laser radar apparatus is connected to a moving object.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Sim Jae Sik
• Kim Ki Soo
• Mheen Bong Ki
• Oh Myoung Sook
• Seo Hong Seok
• Song Jung Ho
• Kwon Yong Hwan
• Kim Dong Sun
• Song Min Hyup
• Choi Gyu Dong

Classifications

• G01S17/87

  Combinations of systems using electromagnetic waves other than radio waves · CPC title

• G01S17/931

  of land vehicles · CPC title

• G01S17/89

  for mapping or imaging · CPC title

• G01S17/42

  Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46) · CPC title

• G01S7/4817 Primary

  relating to scanning · CPC title