GB721197A - Improvements in or relating to radar systems - Google Patents
Improvements in or relating to radar systemsInfo
- Publication number
- GB721197A GB721197A GB176351A GB176351A GB721197A GB 721197 A GB721197 A GB 721197A GB 176351 A GB176351 A GB 176351A GB 176351 A GB176351 A GB 176351A GB 721197 A GB721197 A GB 721197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- receiver
- tube
- deflection
- position lines
- transmitter
- 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
- 230000009365 direct transmission Effects 0.000 abstract 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
- 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
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
-
- 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
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
-
- 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
- G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
- G01S13/878—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
721,197. Radio navigation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 10, 1952 [Jan. 23, 1951], No. 1763/51. Class 40 (7). In a radar system, a target position is given by the intersection of position lines, e.g. hyperbola and ellipse, drawn on a previously prepared chart, the appropriate position lines. of a given type being indicated by the deflection of a C.R. tube. As shown, the C.R. tubes 4, 9 at the receiver B are respectively provided with scale markings which correspond with elliptical and hyperbolic position lines, and in C.R. tube 4, the vertical deflection plates are supplied with the reflected signal from the target C through a channel having a circuit 6 with a delay equal to the time To of direct transmission from the transmitter A to receiver B. The horizontal plates are supplied with the direct transmitter and receiver signal. The C.R. tube deflection, which is proportional to the total time of travel of the reflected signal, i.e. T1+T2, indicates the particular ellipse, previously prepared on the chart, on which the target position must lie. The C.R. tube 9 is associated with a second receiver D and the deflection indicates the particular hyperbola, having focii B, D, on which the target position lies. In a second embodiment, not shown, the second receiver D, is located at A and a third set of circular position lines, with centre A, are employed. In a third embodiment, not shown, two circular position lines are employed and it is stated that pulse F.M., or C.W. systems may be used; in the C.W. case an existing broadcast transmitter can be used. The targets adapted for the system may be either passive or co-operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB176351A GB721197A (en) | 1951-01-23 | 1951-01-23 | Improvements in or relating to radar systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB176351A GB721197A (en) | 1951-01-23 | 1951-01-23 | Improvements in or relating to radar systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB721197A true GB721197A (en) | 1955-01-05 |
Family
ID=9727557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB176351A Expired GB721197A (en) | 1951-01-23 | 1951-01-23 | Improvements in or relating to radar systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB721197A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3184739A (en) * | 1960-10-14 | 1965-05-18 | Franklin Frederick | Method of tracking radar targets in presence of jamming |
| EP0410594A2 (en) * | 1989-07-22 | 1991-01-30 | United Kingdom Atomic Energy Authority | Locating system |
-
1951
- 1951-01-23 GB GB176351A patent/GB721197A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3184739A (en) * | 1960-10-14 | 1965-05-18 | Franklin Frederick | Method of tracking radar targets in presence of jamming |
| EP0410594A2 (en) * | 1989-07-22 | 1991-01-30 | United Kingdom Atomic Energy Authority | Locating system |
| EP0410594A3 (en) * | 1989-07-22 | 1991-12-27 | United Kingdom Atomic Energy Authority | Locating system |
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