DE4004611A1 - Winkeldiskriminator zur richtungsbestimmung hochfrequenter elektromagnetischer wellen - Google Patents
Winkeldiskriminator zur richtungsbestimmung hochfrequenter elektromagnetischer wellenInfo
- Publication number
- DE4004611A1 DE4004611A1 DE19904004611 DE4004611A DE4004611A1 DE 4004611 A1 DE4004611 A1 DE 4004611A1 DE 19904004611 DE19904004611 DE 19904004611 DE 4004611 A DE4004611 A DE 4004611A DE 4004611 A1 DE4004611 A1 DE 4004611A1
- Authority
- DE
- Germany
- Prior art keywords
- subfields
- sum
- angle
- plane
- determining
- 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
- 230000005672 electromagnetic field Effects 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- 241000143236 Idaea efflorata Species 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- RVRCFVVLDHTFFA-UHFFFAOYSA-N heptasodium;tungsten;nonatriacontahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W] RVRCFVVLDHTFFA-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005305 interferometry Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004611 spectroscopical analysis 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/28—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics
- G01S3/32—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics derived from different combinations of signals from separate antennas, e.g. comparing sum with difference
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904004611 DE4004611A1 (de) | 1990-02-15 | 1990-02-15 | Winkeldiskriminator zur richtungsbestimmung hochfrequenter elektromagnetischer wellen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904004611 DE4004611A1 (de) | 1990-02-15 | 1990-02-15 | Winkeldiskriminator zur richtungsbestimmung hochfrequenter elektromagnetischer wellen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4004611A1 true DE4004611A1 (de) | 1991-08-29 |
| DE4004611C2 DE4004611C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-12-24 |
Family
ID=6400161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19904004611 Granted DE4004611A1 (de) | 1990-02-15 | 1990-02-15 | Winkeldiskriminator zur richtungsbestimmung hochfrequenter elektromagnetischer wellen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4004611A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998001767A1 (en) * | 1996-07-04 | 1998-01-15 | Marconi Electronic Systems Limited | Spatial interferometry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1516046B1 (de) * | 1966-03-09 | 1975-10-09 | Telefunken Patent | Anordnung zum gleichzeitigen Erzeugen mehrerer vorgegebener elektromagnetischer Wellentypen |
| US4107690A (en) * | 1972-09-15 | 1978-08-15 | Siemens Aktiengesellschaft | Antenna arrangement for radar or direction finding purposes respectively, with sum and difference patterns |
| US4240080A (en) * | 1979-11-19 | 1980-12-16 | The United States Of America As Represented By The Secretary Of The Army | Short backfire antenna with sum and error patterns |
| DE3207269A1 (de) * | 1981-03-02 | 1982-10-14 | The University Of Arizona Foundation, Tucson, Ariz. | Verfahren und anordnung zum vermindern des einflusses von hintergrundstrahlung |
| US4864308A (en) * | 1987-07-16 | 1989-09-05 | Com Dev Ltd. | Frequency-scanning radiometer |
-
1990
- 1990-02-15 DE DE19904004611 patent/DE4004611A1/de active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1516046B1 (de) * | 1966-03-09 | 1975-10-09 | Telefunken Patent | Anordnung zum gleichzeitigen Erzeugen mehrerer vorgegebener elektromagnetischer Wellentypen |
| US4107690A (en) * | 1972-09-15 | 1978-08-15 | Siemens Aktiengesellschaft | Antenna arrangement for radar or direction finding purposes respectively, with sum and difference patterns |
| US4240080A (en) * | 1979-11-19 | 1980-12-16 | The United States Of America As Represented By The Secretary Of The Army | Short backfire antenna with sum and error patterns |
| DE3207269A1 (de) * | 1981-03-02 | 1982-10-14 | The University Of Arizona Foundation, Tucson, Ariz. | Verfahren und anordnung zum vermindern des einflusses von hintergrundstrahlung |
| US4864308A (en) * | 1987-07-16 | 1989-09-05 | Com Dev Ltd. | Frequency-scanning radiometer |
Non-Patent Citations (2)
| Title |
|---|
| P.W. HANNAN: Optium Feeds for All Three Modes of a Monopulse Antenna: I. und II. In: IRE Transactions on Antennas and Propagation, Sept. 1961, S. 444.461 * |
| SKOLNIK, M.I.: Radar Handbook, 1970 Mc GRAW-HILL BOOK COMP., NEW YORK, Chapter 21, S. 21-1 ff. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998001767A1 (en) * | 1996-07-04 | 1998-01-15 | Marconi Electronic Systems Limited | Spatial interferometry |
| US6188481B1 (en) | 1996-07-04 | 2001-02-13 | Marconi Electronic Systems Limited | Spatial interferometry |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4004611C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |