FR2381319A1 - Montage pour la mesure de la vitesse de vehicules selon le principe du radar a effet doppler - Google Patents
Montage pour la mesure de la vitesse de vehicules selon le principe du radar a effet dopplerInfo
- Publication number
- FR2381319A1 FR2381319A1 FR7803996A FR7803996A FR2381319A1 FR 2381319 A1 FR2381319 A1 FR 2381319A1 FR 7803996 A FR7803996 A FR 7803996A FR 7803996 A FR7803996 A FR 7803996A FR 2381319 A1 FR2381319 A1 FR 2381319A1
- Authority
- FR
- France
- Prior art keywords
- measuring
- assembly
- speed
- vehicles according
- signal
- 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- Withdrawn
Links
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
- G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Montage pour la mesure de la vitesse de véhicules selon le principe du radar à effet Doppler, dans lequel le signal utile Doppler est exploité dans un calculateur auquel il est transmis par un commutateur à valeur de seuil avec emploi d'un oscillateur synchronisable. L'invention prévoit l'insertion d'un modulateur à bande latérale unique recevant le signal utile Doppler SN et un signal de fréquences produit par l'oscillateur, et relié par sa sortie à un circuit à blocage de phase dont le signal de sortie est ensuite converti dans la bande de fréquences initiale du signal Doppler par un démodulateur. Application notamment aux équipements de commande automatique des freins de voies dans les gares de triage de chemins de fer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH189877A CH609464A5 (fr) | 1977-02-16 | 1977-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2381319A1 true FR2381319A1 (fr) | 1978-09-15 |
Family
ID=4221165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7803996A Withdrawn FR2381319A1 (fr) | 1977-02-16 | 1978-02-13 | Montage pour la mesure de la vitesse de vehicules selon le principe du radar a effet doppler |
Country Status (7)
Country | Link |
---|---|
US (1) | US4172256A (fr) |
AT (1) | AT356704B (fr) |
CH (1) | CH609464A5 (fr) |
DE (1) | DE2802968C3 (fr) |
FI (1) | FI780032A (fr) |
FR (1) | FR2381319A1 (fr) |
IT (1) | IT1092737B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4320398A (en) * | 1980-06-13 | 1982-03-16 | Fritzlen Jack D | Minimizing harmonic distortion apparatus |
JPS58501519A (ja) * | 1981-09-24 | 1983-09-08 | キヤタピラ− トラツクタ− カンパニイ | 信号調整回路 |
US4713665A (en) * | 1984-05-14 | 1987-12-15 | Deere & Company | Ground speed sensor |
US4728954A (en) * | 1984-12-20 | 1988-03-01 | Deere & Company | Ground velocity sensor with drop-out detection |
JPH06197015A (ja) * | 1992-12-24 | 1994-07-15 | Canon Inc | 周波数発振装置、周期エラー検出装置、フィルター装置、信号判定装置、及びそれを用いたドップラー速度計 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2891245A (en) * | 1953-11-02 | 1959-06-16 | John H Coogan | Signal tracking device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3787853A (en) * | 1967-03-31 | 1974-01-22 | Raytheon Co | Coded multiple frequency signal system |
FR2341142A1 (fr) * | 1976-02-10 | 1977-09-09 | Labo Cent Telecommunicat | Dispositif de reconnaissance automatique des engins a chenilles |
-
1977
- 1977-02-16 CH CH189877A patent/CH609464A5/xx not_active IP Right Cessation
- 1977-03-07 AT AT148677A patent/AT356704B/de not_active IP Right Cessation
-
1978
- 1978-01-05 FI FI780032A patent/FI780032A/fi not_active Application Discontinuation
- 1978-01-24 DE DE2802968A patent/DE2802968C3/de not_active Expired
- 1978-02-02 US US05/874,506 patent/US4172256A/en not_active Expired - Lifetime
- 1978-02-13 FR FR7803996A patent/FR2381319A1/fr not_active Withdrawn
- 1978-02-16 IT IT7820277A patent/IT1092737B/it active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2891245A (en) * | 1953-11-02 | 1959-06-16 | John H Coogan | Signal tracking device |
Also Published As
Publication number | Publication date |
---|---|
DE2802968B2 (de) | 1980-02-14 |
IT1092737B (it) | 1985-07-12 |
DE2802968C3 (de) | 1980-10-02 |
FI780032A (fi) | 1978-08-17 |
AT356704B (de) | 1980-05-27 |
IT7820277A0 (it) | 1978-02-16 |
CH609464A5 (fr) | 1979-02-28 |
ATA148677A (de) | 1979-10-15 |
DE2802968A1 (de) | 1978-08-17 |
US4172256A (en) | 1979-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |