GB847253A - Instrument approach and landing system for aircraft - Google Patents
Instrument approach and landing system for aircraftInfo
- Publication number
- GB847253A GB847253A GB835757A GB835757A GB847253A GB 847253 A GB847253 A GB 847253A GB 835757 A GB835757 A GB 835757A GB 835757 A GB835757 A GB 835757A GB 847253 A GB847253 A GB 847253A
- Authority
- GB
- United Kingdom
- Prior art keywords
- antenna
- runway
- craft
- azimuth
- elevation
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/44—Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation
- G01S1/54—Narrow-beam systems producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon; Overlapping broad beam systems defining a narrow zone and producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon
- G01S1/58—Narrow-beam systems producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon; Overlapping broad beam systems defining a narrow zone and producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon wherein a characteristic of the beam transmitted or of an auxiliary signal is varied in time synchronously with rotation or oscillation of the beam
- G01S1/60—Varying frequency of beam signal or of auxiliary signal
-
- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
- G01S13/913—Radar or analogous systems specially adapted for specific applications for traffic control for landing purposes
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
847,253. Radio navigation. HUGHES AIRCRAFT CO. March 13, 1957, No. 8357/57. Drawings to Specification. Class 40(7). In an aircraft landing system, the runway is indicated by longitudinal and transverse high frequency radio scanning beam which respectively provide azimuth and elevation readings of craft position. The angular positions of the beams are functions of frequency. The longitudinal beams are a series of vertical planes while the transverse beams are each a sector of a conical surface, the cone apex being at the elevation antenna, at the side of the runway, with the core axis vertical. The intersection of the planes azimuth beam and the conical elevation beam is a hyperbola. The elevation antenna is tilted towards the azimuth antenna in order to place the hyperbola arm, nearest the azimuth antenna, on the runway surface. The angular position of the craft relative to the runway is determined, at the craft, by measurement of the frequency of the incident radiation. The radar echo from the craft provides monitoring signals at the ground transmitters. The beam scanning is effected by means of a frequency shift antenna formed by a folded, rectangular section waveguide with slot radiating elements cut in the narrow hole. The backward wave transmitter and receiver oscillators are electronically tuned, by a series of step voltages applied between the helix and cathode, to produce the successive radiation beam movements.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US534641A US2952845A (en) | 1955-09-16 | 1955-09-16 | Instrument approach and landing system for aircraft |
GB835757A GB847253A (en) | 1957-03-13 | 1957-03-13 | Instrument approach and landing system for aircraft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB835757A GB847253A (en) | 1957-03-13 | 1957-03-13 | Instrument approach and landing system for aircraft |
Publications (1)
Publication Number | Publication Date |
---|---|
GB847253A true GB847253A (en) | 1960-09-07 |
Family
ID=9850977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB835757A Expired GB847253A (en) | 1955-09-16 | 1957-03-13 | Instrument approach and landing system for aircraft |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB847253A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2566150A1 (en) * | 1984-06-18 | 1985-12-20 | Lanchais Michel | Information transmission and reception system, using miniature electro-optical means, and fulfilling the role of ''compass'' |
EP1300689A2 (en) * | 2001-10-04 | 2003-04-09 | Telecom Italia Lab S.p.A. | A method and a system for determining the geographic coordinates within mobile communications networks and related terminal |
-
1957
- 1957-03-13 GB GB835757A patent/GB847253A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2566150A1 (en) * | 1984-06-18 | 1985-12-20 | Lanchais Michel | Information transmission and reception system, using miniature electro-optical means, and fulfilling the role of ''compass'' |
EP1300689A2 (en) * | 2001-10-04 | 2003-04-09 | Telecom Italia Lab S.p.A. | A method and a system for determining the geographic coordinates within mobile communications networks and related terminal |
EP1300689A3 (en) * | 2001-10-04 | 2003-10-08 | TELECOM ITALIA S.p.A. | A method and a system for determining the geographic coordinates within mobile communications networks and related terminal |
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