FR2409521B1 - - Google Patents
Info
- Publication number
- FR2409521B1 FR2409521B1 FR7735043A FR7735043A FR2409521B1 FR 2409521 B1 FR2409521 B1 FR 2409521B1 FR 7735043 A FR7735043 A FR 7735043A FR 7735043 A FR7735043 A FR 7735043A FR 2409521 B1 FR2409521 B1 FR 2409521B1
- Authority
- FR
- France
- 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.)
- Expired
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
- 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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/292—Extracting wanted echo-signals
- G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
- G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold 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
- G01S13/52—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
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
- G01S13/5246—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
-
- 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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/34—Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control
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)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7735043A FR2409521A1 (fr) | 1977-11-22 | 1977-11-22 | Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant |
| DE2850508A DE2850508C2 (de) | 1977-11-22 | 1978-11-21 | Rundsicht-Impulsradargerät |
| IT51989/78A IT1106337B (it) | 1977-11-22 | 1978-11-21 | Dispositivo di eliminazione degli echi fissi piu particolarmente associato ad un sistema radar e sistema che lo comprende |
| GB7845813A GB2011749B (en) | 1977-11-22 | 1978-11-22 | Fixed echo canceller for radar systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7735043A FR2409521A1 (fr) | 1977-11-22 | 1977-11-22 | Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2409521A1 FR2409521A1 (fr) | 1979-06-15 |
| FR2409521B1 true FR2409521B1 (US20080293856A1-20081127-C00150.png) | 1982-10-22 |
Family
ID=9197892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7735043A Granted FR2409521A1 (fr) | 1977-11-22 | 1977-11-22 | Dispositif d'elimination des echos fixes, plus particulierement associe a un systeme radar et systeme radar le comprenant |
Country Status (4)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2467412A1 (fr) * | 1979-10-10 | 1981-04-17 | Thomson Csf | Dispositif numerique de detection de cibles par radar |
| NL7908860A (nl) * | 1979-12-10 | 1981-07-01 | Hollandse Signaalapparaten Bv | Drempelschakeling voor radarvideosignalen. |
| DE3127065A1 (de) * | 1981-07-09 | 1983-01-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zur unterdrueckung von stoerechos bei radaranlagen und anordnung zur durchfuehrung des verfahrens |
| DE3209399A1 (de) * | 1982-03-16 | 1983-09-29 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und anordnung zur verbesserung des signal-stoer-verhaeltnisses bei radaranlagen |
| DE3213430A1 (de) * | 1982-04-10 | 1983-10-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und anordnung zur zielerkennung und stoersignalunterdrueckung in radargeraeten |
| DE3933437A1 (de) * | 1989-10-06 | 1991-04-18 | Diehl Gmbh & Co | Rueckstrahlortungsanlage |
| DE102005023787A1 (de) * | 2005-05-19 | 2006-11-23 | Selex Sistemi Intergrati Gmbh | Verfahren und Vorrichtung zum Korrigieren von Wetterdaten sowie Computerprogrammprodukt |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1245452B (de) * | 1965-06-02 | 1967-07-27 | Int Standard Electric Corp | Radaranlage mit Anzeigeverminderung von laengeren Festzielechos |
| US3786506A (en) * | 1972-03-10 | 1974-01-15 | Hughes Aircraft Co | Dynamic range control system |
| US4058809A (en) * | 1972-06-26 | 1977-11-15 | Control Data Corporation | MTI system and method |
| NL174675C (nl) * | 1976-09-06 | 1984-07-16 | Hollandse Signaalapparaten Bv | Inrichting voor het opwekken van de regelspanning voor de automatische sterkteregeling van een impulsradarapparaat. |
| FR2377640A1 (fr) * | 1977-01-18 | 1978-08-11 | Thomson Csf | Dispositif de stabilisation du taux de fausses alarmes dans un radar et systeme radar comportant un tel dispositif |
-
1977
- 1977-11-22 FR FR7735043A patent/FR2409521A1/fr active Granted
-
1978
- 1978-11-21 DE DE2850508A patent/DE2850508C2/de not_active Expired
- 1978-11-21 IT IT51989/78A patent/IT1106337B/it active
- 1978-11-22 GB GB7845813A patent/GB2011749B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2850508C2 (de) | 1985-01-03 |
| IT1106337B (it) | 1985-11-11 |
| DE2850508A1 (de) | 1979-06-13 |
| IT7851989A0 (it) | 1978-11-21 |
| FR2409521A1 (fr) | 1979-06-15 |
| GB2011749B (en) | 1982-06-16 |
| GB2011749A (en) | 1979-07-11 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |