GB1379775A - Monitoring apparatus - Google Patents
Monitoring apparatusInfo
- Publication number
- GB1379775A GB1379775A GB2637472A GB2637472A GB1379775A GB 1379775 A GB1379775 A GB 1379775A GB 2637472 A GB2637472 A GB 2637472A GB 2637472 A GB2637472 A GB 2637472A GB 1379775 A GB1379775 A GB 1379775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- detectors
- june
- cooled
- wavelength range
- 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.)
- 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
- 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
- G01S3/78—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 electromagnetic waves other than radio waves
- G01S3/782—Systems for determining direction or deviation from predetermined direction
- G01S3/783—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems
- G01S3/784—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems using a mosaic of detectors
-
- 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
- G01S3/78—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 electromagnetic waves other than radio waves
- G01S3/781—Details
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
- Light Receiving Elements (AREA)
Abstract
1379775 Direction finding; television G PUSCH 6 June 1972 [18 June 1971] 26374/72 Addition to 1355975 Headings H4D and H4F In the infra-red radiation monitoring apparatus claimed in Specification 1,355,975, the detectors are made only sensitive to radiation in the wavelength range of 3-4 Ám. Preferably the detection bandwidth is 50 to 300 nm. In the above wavelength range it is found that natural and reflected radiation from the natural surroundings, e.g. snow, brickwalls, concrete, grass &c. is at a minimum, such that the difference between levels of the radiation to be detected and that from the surroundings is at a maximum. Further protection against interference from the sun is provided by a narrow acceptance window. Detectors of lead sulphide cooled to 77‹ K. or cadmium-mercury-telluride cooled to 200‹ K. give improved detection.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702031971 DE2031971C3 (en) | 1970-06-29 | 1970-06-29 | Device for monitoring a larger air space |
DE19712130038 DE2130038C3 (en) | 1970-06-29 | 1971-06-18 | Device for monitoring the air space for infrared and laser beams |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1379775A true GB1379775A (en) | 1975-01-08 |
Family
ID=25759347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2637472A Expired GB1379775A (en) | 1970-06-29 | 1972-06-06 | Monitoring apparatus |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2130038C3 (en) |
GB (1) | GB1379775A (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE643261C (en) * | 1934-06-19 | 1937-04-02 | Machinerieeen En App N Fabriek | Glass lens plate for light signals |
US3144554A (en) * | 1959-10-01 | 1964-08-11 | Bunker Ramo | Radiant energy detection system for suppressing the effects of ambient background radiation |
FR1286798A (en) * | 1961-01-25 | 1962-03-09 | Trt Telecom Radio Electr | Optical device for increasing the field of a telescope |
GB1156323A (en) * | 1965-06-23 | 1969-06-25 | Smiths Industries Ltd | Improvements in or relating to Sonar Apparatus |
-
1971
- 1971-06-18 DE DE19712130038 patent/DE2130038C3/en not_active Expired
-
1972
- 1972-06-06 GB GB2637472A patent/GB1379775A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2130038B2 (en) | 1979-07-05 |
DE2130038C3 (en) | 1982-09-23 |
DE2130038A1 (en) | 1973-01-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |