JP2004264284A - Fskレーダーにおけるアンビギュイティでない距離を増大させる方法 - Google Patents
Fskレーダーにおけるアンビギュイティでない距離を増大させる方法 Download PDFInfo
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- JP2004264284A JP2004264284A JP2003316746A JP2003316746A JP2004264284A JP 2004264284 A JP2004264284 A JP 2004264284A JP 2003316746 A JP2003316746 A JP 2003316746A JP 2003316746 A JP2003316746 A JP 2003316746A JP 2004264284 A JP2004264284 A JP 2004264284A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 12
- 239000013598 vector Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000002592 echocardiography Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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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
- 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
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
-
- 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
- G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
- G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
- G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses
- G01S13/286—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses frequency shift keyed
-
- 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
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
- G01S13/343—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using sawtooth modulation
-
- 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
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
- G01S13/348—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using square or rectangular modulation, e.g. diplex radar for ranging over short distances
-
- 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
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
Abstract
【解決手段】 FSKレーダーのアンビギュイティ距離を増大させるのに使用される方法は、周波数水平域からなるパターンで構成される波形を実現する。その周波数は交互にプラスΔf’値又はマイナスΔf’値偏移する。この波形に、この方法は処理演算子を関連づけ、アンビギュイティなエコー及びイメージ信号を取り除く。この方法は、適用されるレーダーの繰り返し周期を変更しないという利点を有する。本発明による方法は、具体的に自動車のレーダー、及び具体的には衝突防止レーダーに適用できる。
【選択図】 図2
Description
D=C.T/2 (1)
により定義される。
fdi=1/(2T)−fd (2)
という式を有する。
D12/23=(C/4πδf).φ[(F2-F1),(F3-F2)]=C/4πδf).φ12/23 (3)
D13/24=(C/4πδf).φ[(F3-F1),(F4-F2)]=C/4πδf).φ13/24 (4)
D23/34=(C/4πδf).φ[(F3-F2),(F4-F3)]=C/4πδf).φ23/34 (5)
ここで、φ12/23、φ13/24及びφ23/34はターゲットの偏移に対応する位相回転を表す。
D12/23及びD13/24及びD23/34<D0 (6)
(D12/23-D23/34)及び(D13/24-D23/34)及び(D12/23-D13/24)<D1 (7)
その際、距離D0及びD1は望ましい検出能力の関数として選択される。
・周波数Fuに位置する通信線が選択される及び対応するゲインGuが読み取られる。
・イメージ通信線であることになっている通信線が識別される。それは1/2T−Fuに配置される。Fiをその周波数及びGiをそのゲインとする。
・ゲイン基準:Gu−Gi>G0が適用され、ゲインはdBで表される。
その後2つの場合が予想されるはずである。
・Gu−Gi>G0が真実であれば、Fuはアンビギュイティでない距離の実エコーに対応する本当に実用的な信号である。その後Fiは取り除かれるイメージ信号に忠実に対応する。
・Gu−Gi>G0が虚偽であれば、Fuは取り除かれるイメージ信号を表し、信号Fiはアンビギュイティでない距離の実エコーに対応する。
12 周波数の水平域
21 パターン
22 パターン
23 周波数偏移
31 ドップラー周波数
32 混変調線
41 ベクトルF1
42 ベクトルF2
43 ベクトルF3
44 ベクトルF4
51 曲線
52 曲線
53 曲線
54 曲線
61 曲線
62 曲線
71 曲線
72 曲線
73 曲線
74 曲線
75 曲線
Claims (1)
- FSKレーダーが少なくとも4つの周波数水平域を有するパターンを含む波形を送信し、前記パターンを形成する前記水平域の周波数が、先行するパターンの水平域の周波数に対して交互にプラスΔf’値又はマイナスΔf’値(±Δf’)偏移することを特徴とする、前記FSKレーダーのアンビギュイティ距離を増大する方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0211391A FR2844361B1 (fr) | 2002-09-10 | 2002-09-10 | Procede d'elargissement de la distance non ambigue dans les radars a fsk |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004264284A true JP2004264284A (ja) | 2004-09-24 |
JP4506132B2 JP4506132B2 (ja) | 2010-07-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003316746A Expired - Lifetime JP4506132B2 (ja) | 2002-09-10 | 2003-09-09 | Fskレーダーにおけるアンビギュイティでない距離を増大させる方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6859167B2 (ja) |
EP (1) | EP1403658B1 (ja) |
JP (1) | JP4506132B2 (ja) |
FR (1) | FR2844361B1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008045940A (ja) * | 2006-08-11 | 2008-02-28 | Yupiteru Corp | 連続波方式マイクロ波センサによる距離の測定方法 |
JP2012510055A (ja) * | 2008-11-24 | 2012-04-26 | オートリブ エー・エス・ピー・インク | レーダー信号処理方法およびレーダー信号処理装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844361B1 (fr) * | 2002-09-10 | 2004-11-05 | Thales Sa | Procede d'elargissement de la distance non ambigue dans les radars a fsk |
FR2887036B1 (fr) * | 2005-05-24 | 2007-10-12 | Thales Sa | Procede de formation de faisceau par le calcul, notamment adapte a la compensation de defaillances de modules actifs d'un radar a balayage electronique. |
US8115672B2 (en) * | 2010-02-02 | 2012-02-14 | Thales | Method of measuring distance, notably for short-range radar |
CN105301592B (zh) * | 2015-10-12 | 2017-09-29 | 合肥工业大学 | 采用汽车防撞雷达系统的多目标识别算法 |
Citations (5)
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JPH09145826A (ja) * | 1995-11-21 | 1997-06-06 | Fujitsu Ltd | Fm−cwレーダ装置 |
JPH10197626A (ja) * | 1996-12-20 | 1998-07-31 | Thomson Csf | 特に自動車のための障害物検出用レーダ |
JPH10253751A (ja) * | 1997-03-04 | 1998-09-25 | Thomson Csf | レーダ受信機の雑音を低減する装置 |
JPH10282227A (ja) * | 1997-03-28 | 1998-10-23 | Thomson Csf | 周波数シフトキーイング連続波レーダに適用される距離のアンビギティーの除去方法及びその装置 |
JP2000241536A (ja) * | 1999-02-17 | 2000-09-08 | Hitachi Cable Ltd | Fm−cwレーダ装置 |
Family Cites Families (13)
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US4379295A (en) * | 1981-02-03 | 1983-04-05 | The United States Of America As Represented By The Secretary Of The Navy | Low sidelobe pulse compressor |
US4384291A (en) * | 1981-04-15 | 1983-05-17 | The United States Of America As Represented By The Secretary Of The Navy | Efficient low-sidelobe pulse compression |
US4443799A (en) * | 1981-07-02 | 1984-04-17 | Sperry Corporation | Spread spectrum radar |
FR2599854B1 (fr) * | 1982-12-17 | 1988-10-14 | Thomson Csf | Procede de mesure de la distance ambigue et radar doppler a impulsions mettant en oeuvre un tel procede |
US6184820B1 (en) * | 1984-11-29 | 2001-02-06 | Lockheed Martin Corp. | Coherent pulse radar system |
GB2172461B (en) * | 1985-03-13 | 1989-04-19 | Philips Electronic Associated | Method and apparatus for measuring the range and/or radial velocity of a movingtarget |
GB2249448B (en) * | 1990-10-30 | 1995-01-25 | Roke Manor Research | Improvements in or relating to radar systems |
US5442359A (en) * | 1994-06-30 | 1995-08-15 | Unisys Corporation | Apparatus and method for mitigating range-doppler ambiguities in pulse-doppler radars |
US5583512A (en) * | 1995-06-06 | 1996-12-10 | Point Loma Industries, Inc. | Optimal ambiguity function radar |
US5606324A (en) * | 1995-12-07 | 1997-02-25 | Raytheon Company | Radar system |
US5923280A (en) * | 1997-01-17 | 1999-07-13 | Automotive Systems Laboratory, Inc. | Vehicle collision radar with randomized FSK wave form |
US6429806B1 (en) * | 2001-02-16 | 2002-08-06 | Eaton-Vorad Technologies, L.L.C. | Complex homodyned FSK diplex radar |
FR2844361B1 (fr) * | 2002-09-10 | 2004-11-05 | Thales Sa | Procede d'elargissement de la distance non ambigue dans les radars a fsk |
-
2002
- 2002-09-10 FR FR0211391A patent/FR2844361B1/fr not_active Expired - Lifetime
-
2003
- 2003-09-04 EP EP03102705.5A patent/EP1403658B1/fr not_active Expired - Lifetime
- 2003-09-09 US US10/657,708 patent/US6859167B2/en not_active Expired - Lifetime
- 2003-09-09 JP JP2003316746A patent/JP4506132B2/ja not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09145826A (ja) * | 1995-11-21 | 1997-06-06 | Fujitsu Ltd | Fm−cwレーダ装置 |
JPH10197626A (ja) * | 1996-12-20 | 1998-07-31 | Thomson Csf | 特に自動車のための障害物検出用レーダ |
JPH10253751A (ja) * | 1997-03-04 | 1998-09-25 | Thomson Csf | レーダ受信機の雑音を低減する装置 |
JPH10282227A (ja) * | 1997-03-28 | 1998-10-23 | Thomson Csf | 周波数シフトキーイング連続波レーダに適用される距離のアンビギティーの除去方法及びその装置 |
JP2000241536A (ja) * | 1999-02-17 | 2000-09-08 | Hitachi Cable Ltd | Fm−cwレーダ装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008045940A (ja) * | 2006-08-11 | 2008-02-28 | Yupiteru Corp | 連続波方式マイクロ波センサによる距離の測定方法 |
JP4705532B2 (ja) * | 2006-08-11 | 2011-06-22 | 株式会社ユピテル | 連続波方式マイクロ波センサによる距離の測定方法 |
JP2012510055A (ja) * | 2008-11-24 | 2012-04-26 | オートリブ エー・エス・ピー・インク | レーダー信号処理方法およびレーダー信号処理装置 |
Also Published As
Publication number | Publication date |
---|---|
US20050017892A1 (en) | 2005-01-27 |
US6859167B2 (en) | 2005-02-22 |
FR2844361B1 (fr) | 2004-11-05 |
EP1403658A1 (fr) | 2004-03-31 |
JP4506132B2 (ja) | 2010-07-21 |
FR2844361A1 (fr) | 2004-03-12 |
EP1403658B1 (fr) | 2016-12-21 |
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