KR101207718B1 - 주파수변조연속파 레이더 시스템 - Google Patents
주파수변조연속파 레이더 시스템 Download PDFInfo
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- KR101207718B1 KR101207718B1 KR1020110022746A KR20110022746A KR101207718B1 KR 101207718 B1 KR101207718 B1 KR 101207718B1 KR 1020110022746 A KR1020110022746 A KR 1020110022746A KR 20110022746 A KR20110022746 A KR 20110022746A KR 101207718 B1 KR101207718 B1 KR 101207718B1
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- frequency
- signal
- filter
- radar system
- oscillator
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- 238000005070 sampling Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 8
- 108091006146 Channels Proteins 0.000 description 13
- 238000004590 computer program Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000035559 beat frequency Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
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- 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
- G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
-
- 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
- G01S13/536—Discriminating between fixed and moving objects or between objects moving at different speeds using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
-
- 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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
- G01S7/354—Extracting wanted echo-signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
-
- 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
- G01S2013/0236—Special technical features
- G01S2013/0245—Radar with phased array antenna
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
도 2 및 도 3은 AA 필터의 지연시간의 영향을 설명하기 위한 것이다.
도 4는 AA 필터의 차단 주파수의 설정에 따른 영향을 설명하기 위한 것이다.
도 5 및 도 6은 본 발명의 실시예에 따른 FMCW 레이더 시스템의 ADC의 동작을 나타낸다.
도 7은 본 발명의 실시예에 따른 FMCW 레이더 시스템의 신호처리과정을 나타낸다.
Claims (5)
- 변조신호발생부에서 발생된 송신신호의 주파수를 변조하여 출력하는 발진기;
상기 발진기로부터 출력된 주파수 변조된 송신신호를 외부로 방사하는 송신 안테나;
복수의 수신 안테나들 중 하나를 선택하여 선택된 수신 안테나를 통하여 수신된 신호를 출력하는 스위치;
상기 발진기에 의해 주파수 변조된 송신신호의 일부와, 상기 스위치로부터 출력된 신호를 입력받아 중간주파수 대역의 비트신호를 발생시키는 주파수혼합기;
상기 주파수혼합기로부터 출력된 신호 중 특정 대역의 주파수를 지닌 신호를 통과시키는 AA 필터; 및
상기 스위치의 스위칭 주파수보다 큰 샘플링 주파수에 따라 샘플링을 수행하여 상기 AA 필터로부터 출력된 신호를 디지털 신호로 변환하는 ADC
를 포함하고,
상기 AA 필터의 차단주파수는 (fs-fw)/2R인 것을 특징으로 하는 FMCW 레이더 시스템.
(fs 는 샘플링 주파수, fw는 스위칭 주파수, R는 수신 안테나의 개수) - 삭제
- 제1항에 있어서,
상기 AA 필터의 지연 시간은 다음의 수학식을 만족하는 것을 특징으로 하는 FMCW 레이더 시스템.
τa > 1/(αfw -fw/2R) = 2R/(2αR-1)fw
τa는 AA 필터의 지연 시간, α는 1 이상의 실수, fw 는 스위칭 주파수, R는 수신 안테나의 개수 - 제1항에 있어서,
상기 ADC에 연결된 데시메이션 필터를 더 포함하는 것을 특징으로 하는 FMCW 레이더 시스템. - 제4항에 있어서,
상기 데시메이션 필터는 fw/2R의 차단 주파수를 가지는 것을 특징으로 하는 FMCW 레이더 시스템.
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KR1020110022746A KR101207718B1 (ko) | 2011-03-15 | 2011-03-15 | 주파수변조연속파 레이더 시스템 |
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KR1020110022746A KR101207718B1 (ko) | 2011-03-15 | 2011-03-15 | 주파수변조연속파 레이더 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20120105137A KR20120105137A (ko) | 2012-09-25 |
KR101207718B1 true KR101207718B1 (ko) | 2012-12-03 |
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KR1020110022746A KR101207718B1 (ko) | 2011-03-15 | 2011-03-15 | 주파수변조연속파 레이더 시스템 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102128544B1 (ko) * | 2012-12-26 | 2020-06-30 | 현대모비스 주식회사 | 레이더 장치 및 이에 적용되는 신호처리방법 |
US9685960B2 (en) * | 2014-07-31 | 2017-06-20 | Valeo Radar Systems, Inc. | Method and apparatus for generating a bit stream signal having a reduced output swing |
KR102316479B1 (ko) * | 2019-12-13 | 2021-10-21 | 세종대학교산학협력단 | 레이더 시스템의 신호 분석 장치 및 방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11311668A (ja) * | 1998-04-28 | 1999-11-09 | Toyota Motor Corp | Fm−cwレーダ装置 |
JP2002098753A (ja) | 2000-09-26 | 2002-04-05 | Fujitsu Ten Ltd | Fm−cwレーダ装置 |
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- 2011-03-15 KR KR1020110022746A patent/KR101207718B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11311668A (ja) * | 1998-04-28 | 1999-11-09 | Toyota Motor Corp | Fm−cwレーダ装置 |
JP2002098753A (ja) | 2000-09-26 | 2002-04-05 | Fujitsu Ten Ltd | Fm−cwレーダ装置 |
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