FR1554437A - - Google Patents
Info
- Publication number
- FR1554437A FR1554437A FR1554437DA FR1554437A FR 1554437 A FR1554437 A FR 1554437A FR 1554437D A FR1554437D A FR 1554437DA FR 1554437 A FR1554437 A FR 1554437A
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/04—Recursive 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
- 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
- G01S13/526—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 performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB747468A GB1214371A (en) | 1968-02-15 | 1968-02-15 | Digital canonical filter |
NL6802332A NL6802332A (fr) | 1968-02-15 | 1968-02-19 | |
BE710966 | 1968-02-19 | ||
DER0048039 | 1968-02-19 | ||
FR140436 | 1968-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1554437A true FR1554437A (fr) | 1969-01-17 |
Family
ID=27507687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1554437D Expired FR1554437A (fr) | 1968-02-15 | 1968-02-20 |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE710966A (fr) |
DE (1) | DE1616410A1 (fr) |
FR (1) | FR1554437A (fr) |
GB (1) | GB1214371A (fr) |
NL (1) | NL6802332A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2418579A2 (fr) * | 1977-03-09 | 1979-09-21 | Onera (Off Nat Aerospatiale) | Filtre numerique recursif a coefficients en combinaison reduite de puissances de deux |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2255754B1 (fr) * | 1973-12-11 | 1978-03-17 | Ibm France | |
GB2151426B (en) * | 1983-12-09 | 1988-09-21 | Plessey Co Plc | Clutter filter |
-
1968
- 1968-02-15 GB GB747468A patent/GB1214371A/en not_active Expired
- 1968-02-19 BE BE710966D patent/BE710966A/xx unknown
- 1968-02-19 DE DE19681616410 patent/DE1616410A1/de active Pending
- 1968-02-19 NL NL6802332A patent/NL6802332A/xx unknown
- 1968-02-20 FR FR1554437D patent/FR1554437A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2418579A2 (fr) * | 1977-03-09 | 1979-09-21 | Onera (Off Nat Aerospatiale) | Filtre numerique recursif a coefficients en combinaison reduite de puissances de deux |
Also Published As
Publication number | Publication date |
---|---|
BE710966A (fr) | 1968-07-01 |
GB1214371A (en) | 1970-12-02 |
NL6802332A (fr) | 1969-08-21 |
DE1616410A1 (de) | 1971-04-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |