WO2020261526A1 - レーダシステム、イメージング方法およびイメージングプログラム - Google Patents

レーダシステム、イメージング方法およびイメージングプログラム Download PDF

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Publication number
WO2020261526A1
WO2020261526A1 PCT/JP2019/025792 JP2019025792W WO2020261526A1 WO 2020261526 A1 WO2020261526 A1 WO 2020261526A1 JP 2019025792 W JP2019025792 W JP 2019025792W WO 2020261526 A1 WO2020261526 A1 WO 2020261526A1
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WO
WIPO (PCT)
Prior art keywords
image
radar
movement
motion
movement amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/025792
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English (en)
French (fr)
Japanese (ja)
Inventor
一峰 小倉
達哉 住谷
正行 有吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to PCT/JP2019/025792 priority Critical patent/WO2020261526A1/ja
Priority to JP2021528819A priority patent/JP7268732B2/ja
Priority to US17/620,560 priority patent/US20220268915A1/en
Publication of WO2020261526A1 publication Critical patent/WO2020261526A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G01S7/415—Identification of targets based on measurements of movement associated with the target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/583—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets
    • G01S13/584—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets adapted for simultaneous range and velocity measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/585—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/588—Velocity or trajectory determination systems; Sense-of-movement determination systems deriving the velocity value from the range measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging

Definitions

  • Non-Patent Document 2 describes a method of estimating the optical flow between image frames and measuring the velocity of an object in an image.
  • FIG. 19 is a block diagram showing a configuration example of a general radar device.
  • the radar device 901 shown in FIG. 19 includes a transmitting antenna (Tx) 102 that emits electromagnetic waves, a receiving antenna (Rx) 103 that receives reflected electromagnetic waves, a radar signal transmitting / receiving unit 904, and an imaging processing unit 905. ..
  • the transmitting antenna 102 and the receiving antenna 103 correspond to the radar 804 in FIG.
  • one transmitting antenna 102 and one receiving antenna 103 are illustrated in FIG. 19, in reality, a large number of transmitting antennas 102 and a large number of receiving antennas 103 are installed.
  • a system including a transmitting antenna, a receiving antenna, and a radar device is referred to as a radar system.
  • the movement amount estimation unit 210 can calculate the movement amount of each point of interest by the following equation (7) as in the equation (2).
  • FIG. 11 is an explanatory diagram showing an example of an image in which the area is divided based on the points of interest.
  • FIG. 11 shows an example in which the region is divided based on the position of the point of interest in the image # 1 illustrated in FIG.
  • FIG. 13 (A) shows the overall processing of the radar system.
  • 13 (B) and 13 (C) show the processing executed by the motion estimation unit 206.
  • FIG. 14 is a block diagram showing a configuration example of the radar system of the fourth embodiment.
  • the radar system of the fourth embodiment includes a radar device 401, a transmitting antenna 102, and a receiving antenna 103. Although one transmitting antenna 102 and one receiving antenna 103 are illustrated in FIG. 14, in reality, a large number of transmitting antennas 102 and a large number of receiving antennas 103 are installed.
  • the movement amount estimation unit 410 estimates the movement amount of the object 800 for each area based on the data indicating the division area input to the image area division unit 411.
  • the movement amount estimation unit 410 outputs the estimated movement amount to the motion compensation image generation unit 412.
  • the movement amount estimation unit 410 may estimate the movement amount for each region by any of the methods used in the first to third embodiments. Let ⁇ p (t i ) be the estimated amount of movement for each image region.
  • Each function (each processing) in each of the above embodiments can be realized by a computer having a processor such as a CPU (Central Processing Unit) or memory.
  • a program for carrying out the method (processing) in the above embodiment may be stored in a storage device (storage medium), and each function may be realized by executing the program stored in the storage device on the CPU. Good.
  • the program may also be stored on various types of temporary computer-readable media (transitory computer readable medium). Programs are supplied to the temporary computer-readable medium, for example, via a wired or wireless communication path, that is, via an electrical signal, an optical signal, or an electromagnetic wave.
  • the movement amount estimation means has an imaging time based on a measurement signal obtained by a combination of a transmitting antenna and a receiving antenna having the same or close center positions of antenna openings formed by the transmitting antenna and the receiving antenna.
  • the radar system of Appendix 3 that estimates the amount of movement of the object at the irradiation time of each transmitting antenna based on a plurality of different images.
  • the image region dividing means divides an image so that the distance between the point of interest and the imaging position is the shortest.
  • the motion estimation means is a radar system according to any one of Appendix 1 to Appendix 11 that estimates the motion of the object based on the position or speed of the object obtained from an external sensor.
  • Appendix 17 To the computer The process of estimating the amount of movement of the object at the time of irradiation of the electromagnetic waves of each transmitting antenna, and The imaging program of Appendix 16 for executing a process of generating the radar image based on the estimated movement amount of the object.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)
PCT/JP2019/025792 2019-06-28 2019-06-28 レーダシステム、イメージング方法およびイメージングプログラム Ceased WO2020261526A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2019/025792 WO2020261526A1 (ja) 2019-06-28 2019-06-28 レーダシステム、イメージング方法およびイメージングプログラム
JP2021528819A JP7268732B2 (ja) 2019-06-28 2019-06-28 レーダシステム、イメージング方法およびイメージングプログラム
US17/620,560 US20220268915A1 (en) 2019-06-28 2019-06-28 Radar system, imaging method, and imaging program

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/025792 WO2020261526A1 (ja) 2019-06-28 2019-06-28 レーダシステム、イメージング方法およびイメージングプログラム

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US (1) US20220268915A1 (https=)
JP (1) JP7268732B2 (https=)
WO (1) WO2020261526A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022161115A (ja) * 2021-04-08 2022-10-21 日本電気株式会社 レーダ装置、イメージング方法およびイメージングプログラム

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KR20210101957A (ko) * 2020-02-11 2021-08-19 삼성전자주식회사 레이더 시스템에서의 객체 속도 검출 방법 및 장치

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JPH0933649A (ja) * 1995-07-21 1997-02-07 Toshiba Corp Ｉｓａｒ画像目標識別処理装置
JPH10206539A (ja) * 1997-01-22 1998-08-07 Nec Corp 合成開口レーダシステム、その情報処理装置および方法
JP2015135274A (ja) * 2014-01-17 2015-07-27 日本電気株式会社 移動体追尾装置及び、移動体追尾方法
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Publication number Priority date Publication date Assignee Title
JPH0933649A (ja) * 1995-07-21 1997-02-07 Toshiba Corp Ｉｓａｒ画像目標識別処理装置
JPH10206539A (ja) * 1997-01-22 1998-08-07 Nec Corp 合成開口レーダシステム、その情報処理装置および方法
JP2015135274A (ja) * 2014-01-17 2015-07-27 日本電気株式会社 移動体追尾装置及び、移動体追尾方法
JP2015210125A (ja) * 2014-04-24 2015-11-24 三菱電機株式会社 画像レーダ装置
US20160131752A1 (en) * 2014-11-11 2016-05-12 Nxp, B.V. Mimo radar system
JP2017003494A (ja) * 2015-06-12 2017-01-05 株式会社東芝 レーダ装置及びレーダ信号処理方法
CN108693526A (zh) * 2018-05-25 2018-10-23 中国人民解放军国防科技大学 用于mimo雷达的运动目标相位补偿方法

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Publication number Priority date Publication date Assignee Title
JP2022161115A (ja) * 2021-04-08 2022-10-21 日本電気株式会社 レーダ装置、イメージング方法およびイメージングプログラム
US12259465B2 (en) 2021-04-08 2025-03-25 Nec Corporation Radar apparatus, imaging method, and non-transitory storage medium

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JP7268732B2 (ja) 2023-05-08
US20220268915A1 (en) 2022-08-25

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