EP1831720A1 - Systeme de radar pour la surveillance de cibles dans differentes zones de distance - Google Patents

Systeme de radar pour la surveillance de cibles dans differentes zones de distance

Info

Publication number
EP1831720A1
EP1831720A1 EP05821748A EP05821748A EP1831720A1 EP 1831720 A1 EP1831720 A1 EP 1831720A1 EP 05821748 A EP05821748 A EP 05821748A EP 05821748 A EP05821748 A EP 05821748A EP 1831720 A1 EP1831720 A1 EP 1831720A1
Authority
EP
European Patent Office
Prior art keywords
radar
radar system
signal
mixer
scanner
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.)
Withdrawn
Application number
EP05821748A
Other languages
German (de)
English (en)
Inventor
Thomas Brosche
Sven Czarnecki
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1831720A1 publication Critical patent/EP1831720A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
    • 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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/106—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using transmission of pulses having some particular characteristics
    • 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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/18—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein range gates are used
    • 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
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves

Definitions

  • Radar system for monitoring targets in different distance ranges
  • the invention relates to a radar system for monitoring targets in different distance ranges.
  • CW radar-based burglar alarm systems consist essentially of a simple continuous wave (CW) radar.
  • the Doppler signal produced by moving objects is evaluated and used as a criterion for an alarm.
  • the distance range to be monitored is determined by the range of the CW radar and can not be precisely adjusted or not adjusted, since the range of the system is essentially limited by the transmission power and thus can not be determined with sufficient accuracy.
  • targets with different radar backscatter cross sections also have different ranges.
  • other radar modulation techniques must be used. It is well known that a distance measurement can be made with a pulse radar.
  • a CW carrier signal is amplitude modulated in a pulse shape and transmitted via an antenna. The carrier pulse is reflected at the target object and from the time between emission of the pulse and the arrival of the reflected radiation, the target distance and - using the Doppler effect - the relative speed of the target object can be determined.
  • the receiving side, the Radarsendepulsformer supplied high-frequency signal and the Radarempfangssignal is fed to a mixer, the output of the mixer is a signal evaluation on at least one
  • the sidelobes / sidebands in the frequency spectrum fall off faster or faster at a considered bandwidth. This is due to the relatively long compared to the prior art radar pulses.
  • the hardware cost is low, since only a slight modification of a simple CW radar is necessary. Due to the favorable spectral signal distribution (side lobe limitation), the approval requirements for the released frequency ranges can be adhered to without much effort.
  • a simple and low-effort range limitation for a hybrid form of CW and pulse radar can be realized. There is the possibility of a subdivision into different range limits for target object classification / separation. The current measuring range is not recognizable from the outside, which is particularly advantageous for burglar alarm systems. If a target object moves into the monitoring range of the set range limit, then a Doppler signal can be measured on the basis of the radial direction of movement of the target object relative to the radar sensor.
  • FIG. 1 is a block diagram of the radar system according to the invention.
  • FIG. 2 shows a time diagram of the radar transmission pulses and the reception-side sampling.
  • the structure of the radar system according to the invention is shown in FIG.
  • the oscillator 1 generates a high-frequency signal, e.g. in the GHz range, which passes through the directional coupler 2 and the RF switch 3 (Radarsendepulsformer) to the transmitting antenna 4 and is emitted from this.
  • a portion of the transmission power of the oscillator 1 is coupled to the directional coupler 2 and fed to the receiving mixer 6.
  • Target object 10 reflected electromagnetic wave is passed via the receiving antenna 5 to the receiving mixer 6.
  • a low-frequency Doppler signal whose frequency is proportional to the relative speed between the radar sensor and the target object, is produced at the output of the receiving mixer 6.
  • the mixer output signal is passed through the low frequency switch 7, which acts as a sampler and which is part of the sample and hold stage 8.
  • the output signal of the mixer 6 can also be fed directly to the signal evaluation 9 (without switch 7 and sample and hold stage).
  • Figure 2 For a radar system with range limitation can be realized in which the sidelobes / sidebands drop rapidly in the frequency spectrum, as shown in Figure 2 switch control is applied.
  • the upper and middle parts (zoomed) of Figure 2 show the modulation of the transmission signal.
  • the lower part of Figure 2 shows the switch control in the receiving branch, also in zoomed representation.
  • Radar pulses are, for example, 10 ⁇ s long with a period of 25 ⁇ s.
  • the RF switch 3 is controlled with the control signal TX so that a transmission pulse with a relatively long pulse duration ⁇ j , for example in the ⁇ s range, is emitted with steep edges.
  • the range limit R of the system is set (set delay time).
  • the set range R of the surveillance area can be determined using the familiar formula from radar technology
  • the pulse / sampling duration TR of the low-frequency switch 7 can also correspond to the time ⁇ t.
  • the mixer output signal directly (11) can be used for the signal evaluation 9, the range is not additionally limited and thus represents the maximum range according to the aforementioned radar equation.
  • the sample plus RX (TR) delayed with respect to the transmit pulse TX monitors the entire measuring range at intervals of each delay setting ( ⁇ t-TR)
  • a plurality of samplers connected in parallel may be provided, the delay setting and the sampling times of which are selected so that they can not be operated overlapping in time staggered during the transmission of a radar pulse. This allows you to monitor targets in multiple ranges (zones).
  • the system behaves essentially like a CW radar in the set monitoring area and provides the Doppler signal of a moving target.
  • a better distinction can be made for multi-objective scenarios and, if appropriate, a target object classification.
  • sabotage protection can be implemented for impermissible masking and masking attempts of the system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un système de radar pour la surveillance de cibles dans différentes zones de distance, système dans lequel des impulsions radar sont émises, impulsions dont la durée est supérieure à celle correspondant au temps de parcours entre deux objets situés à des distances différentes, à séparer l'un de l'autre. Côté réception, le signal haute fréquence transmis au générateur d'impulsions émettrices radar (3) et le signal récepteur radar sont envoyés à un mixeur (6). Le signal de sortie du mixeur (6) est transmis à une évaluation de signaux (9), via au moins un échantillonneur (7, 8), dont le réglage de temporisation par rapport au flanc antérieur de l'impulsion émettrice radar, donne la limite de portée de la zone de distance à surveiller
EP05821748A 2004-12-23 2005-12-16 Systeme de radar pour la surveillance de cibles dans differentes zones de distance Withdrawn EP1831720A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062023.7A DE102004062023B4 (de) 2004-12-23 2004-12-23 Radarsystem zur Überwachung von Zielen in verschiedenen Entfernungsbereichen
PCT/EP2005/056864 WO2006069924A1 (fr) 2004-12-23 2005-12-16 Systeme de radar pour la surveillance de cibles dans differentes zones de distance

Publications (1)

Publication Number Publication Date
EP1831720A1 true EP1831720A1 (fr) 2007-09-12

Family

ID=35736335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05821748A Withdrawn EP1831720A1 (fr) 2004-12-23 2005-12-16 Systeme de radar pour la surveillance de cibles dans differentes zones de distance

Country Status (12)

Country Link
US (1) US20080303709A1 (fr)
EP (1) EP1831720A1 (fr)
JP (1) JP2008525774A (fr)
KR (1) KR20070086533A (fr)
CN (1) CN101111780A (fr)
AU (1) AU2005321332A1 (fr)
BR (1) BRPI0507128A (fr)
DE (1) DE102004062023B4 (fr)
FR (1) FR2880133B1 (fr)
GB (1) GB2421650B (fr)
IT (1) ITMI20052402A1 (fr)
WO (1) WO2006069924A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051098A1 (fr) 2007-10-19 2009-04-22 Ford Global Technologies, LLC Procédé et système pour la détection de présence
KR101044000B1 (ko) * 2008-11-13 2011-06-24 엘아이지넥스원 주식회사 도플러 주파수 측정방법과 장치 및 이를 이용한 레이더 세트의 시험 시스템
US7952515B2 (en) * 2009-02-26 2011-05-31 Mcewan Technologies, Llc Range gated holographic radar
KR101378281B1 (ko) * 2012-08-22 2014-03-25 주성진 전파신호를 이용한 복수표적 검지장치
CN103308911B (zh) * 2013-06-06 2015-09-16 重庆大学 基于距离欺骗技术的微位移测量方法及系统
KR101645681B1 (ko) * 2014-02-25 2016-08-04 주성진 무인보안감시시스템의 복수표적 검지장치
US10620298B2 (en) 2016-08-26 2020-04-14 Infineon Technologies Ag Receive chain configuration for concurrent multi-mode radar operation
EP3865899A1 (fr) 2020-02-14 2021-08-18 UTC Fire & Security EMEA BVBA Radar doppler à impulsions à résolution de plage
CN113811792B (zh) * 2020-03-27 2023-08-04 深圳市速腾聚创科技有限公司 基于连续波的测距方法、装置和激光雷达

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CA2113454A1 (fr) * 1992-05-18 1993-11-25 Werner Sieprath Methode de surveillance de zone
US5608404A (en) * 1993-06-23 1997-03-04 The United States Of America As Represented By The United States Department Of Energy Imaging synthetic aperture radar
JP3294726B2 (ja) * 1994-12-20 2002-06-24 本田技研工業株式会社 レーダ装置
GB9613645D0 (en) * 1996-06-28 1996-08-28 Cambridge Consultants Vehicle radar system
US6121915A (en) * 1997-12-03 2000-09-19 Raytheon Company Random noise automotive radar system
US6069581A (en) 1998-02-20 2000-05-30 Amerigon High performance vehicle radar system
US6239736B1 (en) 1999-04-21 2001-05-29 Interlogix, Inc. Range-gated radar motion detector
DE19963006A1 (de) 1999-12-24 2001-06-28 Bosch Gmbh Robert Verfahren und Vorrichtung zur Erfassung und Auswertung von Objekten im Umgebungsbereich eines Fahrzeuges
US6362776B1 (en) * 2000-02-04 2002-03-26 Honeywell International Inc. Precision radar altimeter with terrain feature coordinate location capability
DE10142171A1 (de) * 2001-08-29 2003-03-20 Bosch Gmbh Robert Radaranordnung
JP3610052B2 (ja) * 2002-04-18 2005-01-12 三菱電機株式会社 レーダ装置
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See references of WO2006069924A1 *

Also Published As

Publication number Publication date
US20080303709A1 (en) 2008-12-11
GB2421650A (en) 2006-06-28
GB0525721D0 (en) 2006-01-25
BRPI0507128A (pt) 2007-06-19
JP2008525774A (ja) 2008-07-17
DE102004062023A1 (de) 2006-07-13
KR20070086533A (ko) 2007-08-27
AU2005321332A1 (en) 2006-07-06
WO2006069924A1 (fr) 2006-07-06
CN101111780A (zh) 2008-01-23
DE102004062023B4 (de) 2021-12-23
FR2880133A1 (fr) 2006-06-30
GB2421650B (en) 2008-04-16
ITMI20052402A1 (it) 2006-06-24
FR2880133B1 (fr) 2009-04-24

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