Title:
PHASE ENCODING UNSATURATED MODULATION METHOD AND DEVICE, LASER RADAR RANGING AND SPEED MEASUREMENT METHOD AND LASER RADAR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/051423
Kind Code:
A1
Abstract:
Provided are a phase encoding unsaturated modulation method and device, a laser radar ranging and speed measurement method and a laser radar system, wherein the phase unsaturated modulation method is adopted to make modulated laser signals have both a single frequency component and a phase modulation component with the same or close energy ratio, wherein the single frequency component can be used for obtaining the relative motion speed between a platform and a target and compensating the frequency drift of a seed laser, constructing a matched filtering function by utilizing the obtained relative Doppler frequency, performing pulse compression on the phase encoded signals to obtain distance information between the target and the platform, and simultaneously completing the ranging and speed measurement, and having advantages of high accuracy, small error, small amount of calculation and low system complexity.
Inventors:
LI CUNHUI (CN)
YAO JIAN (CN)
ZHANG SHUMIN (CN)
FU XIAOJIN (CN)
YAO JIAN (CN)
ZHANG SHUMIN (CN)
FU XIAOJIN (CN)
Application Number:
PCT/CN2019/107358
Publication Date:
March 25, 2021
Filing Date:
September 23, 2019
Export Citation:
Assignee:
ADVANCED OPTICAL DETECTION TECH CO LTD (CN)
International Classes:
G01S17/95
Foreign References:
| CN109541636A | 2019-03-29 | |||
| CN105067103A | 2015-11-18 | |||
| CN110187350A | 2019-08-30 | |||
| US3849780A | 1974-11-19 | |||
| CN109031338A | 2018-12-18 | |||
| CN110221308A | 2019-09-10 | |||
| CN105629258A | 2016-06-01 |
Other References:
SHENG JIANFENG: "Signal Processing and Performance Analyzing of Phase-coded Radar", CHINESE MASTER’S THESES FULL-TEXT DATABASE, INFORMATION SCIENCE AND TECHNOLOGY, 20 June 2004 (2004-06-20), XP055793230
See also references of EP 4024085A4
See also references of EP 4024085A4
Attorney, Agent or Firm:
BEIJING HUIYINGJIECHUANG INTELLECTUAL PROPERTY AGENCY (CN)
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