FR2503378A1 - Procede et dispositif d'elimination des echos fixes - Google Patents
Procede et dispositif d'elimination des echos fixes Download PDFInfo
- Publication number
- FR2503378A1 FR2503378A1 FR8106830A FR8106830A FR2503378A1 FR 2503378 A1 FR2503378 A1 FR 2503378A1 FR 8106830 A FR8106830 A FR 8106830A FR 8106830 A FR8106830 A FR 8106830A FR 2503378 A1 FR2503378 A1 FR 2503378A1
- Authority
- FR
- France
- Prior art keywords
- phase
- successive
- filter
- vcm
- video 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.)
- Granted
Links
- 230000001427 coherent effect Effects 0.000 claims abstract description 28
- 238000002592 echocardiography Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000018199 S phase Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 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
- G01S13/02—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
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8106830A FR2503378A1 (fr) | 1981-04-06 | 1981-04-06 | Procede et dispositif d'elimination des echos fixes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8106830A FR2503378A1 (fr) | 1981-04-06 | 1981-04-06 | Procede et dispositif d'elimination des echos fixes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2503378A1 true FR2503378A1 (fr) | 1982-10-08 |
| FR2503378B1 FR2503378B1 (enrdf_load_stackoverflow) | 1984-12-14 |
Family
ID=9257031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8106830A Granted FR2503378A1 (fr) | 1981-04-06 | 1981-04-06 | Procede et dispositif d'elimination des echos fixes |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2503378A1 (enrdf_load_stackoverflow) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046547A (en) * | 1956-11-23 | 1962-07-24 | Hughes Aircraft Co | Two-pulse mti radar system |
| US3860924A (en) * | 1973-08-31 | 1975-01-14 | Hughes Aircraft Co | Moving target indicator system |
-
1981
- 1981-04-06 FR FR8106830A patent/FR2503378A1/fr active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046547A (en) * | 1956-11-23 | 1962-07-24 | Hughes Aircraft Co | Two-pulse mti radar system |
| US3860924A (en) * | 1973-08-31 | 1975-01-14 | Hughes Aircraft Co | Moving target indicator system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2503378B1 (enrdf_load_stackoverflow) | 1984-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name | ||
| TP | Transmission of property |