GB1338863A

GB1338863A – Navigation receiver for use in a low frequency navigation system
– Google Patents

GB1338863A – Navigation receiver for use in a low frequency navigation system
– Google Patents
Navigation receiver for use in a low frequency navigation system

Info

Publication number
GB1338863A

GB1338863A
GB1263672A
GB1263672A
GB1338863A
GB 1338863 A
GB1338863 A
GB 1338863A
GB 1263672 A
GB1263672 A
GB 1263672A
GB 1263672 A
GB1263672 A
GB 1263672A
GB 1338863 A
GB1338863 A
GB 1338863A
Authority
GB
United Kingdom
Prior art keywords
phase
receiver
frequency
lane
march
Prior art date
1971-03-31
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

Application number
GB1263672A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Bendix Corp

Original Assignee
Bendix Corp
Priority date (The priority date 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 date listed.)
1971-03-31
Filing date
1972-03-17
Publication date
1973-11-28

1972-03-17
Application filed by Bendix Corp
filed
Critical
Bendix Corp

1973-11-28
Publication of GB1338863A
publication
Critical
patent/GB1338863A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

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

G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems

G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference

G01S1/308—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference particularly adapted to Omega systems

H—ELECTRICITY

H03—ELECTRONIC CIRCUITRY

H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES

H03L7/00—Automatic control of frequency or phase; Synchronisation

Abstract

1338863 Radio navigation BENDIX CORP 17 March 1972 [31 March 1971] 12636/72 Heading H4D A phase-comparison radio navigation receiver for sequential signals on the same carrier frequency f1 comprises a first mixer 16 converting them to a frequency f11>f1 followed by a second mixer 24 converting the signals at f11 to square waveform at a frequency f111 1 and thereafter a phase comparator. The embodiment is a receiver for the «Omega» system. All internally-generated frequencies are derived from a single master oscillator (40, Fig. 3, not shown); frequency drift tends to be selfcompensating. As the phase measurement is on an intermittent and generally noisy signal, longterm phase averaging is by a phase tracker utilizing a phase-locked loop (see Division G4), an individual digital memory being provided for each station to be received, Figs. 6, 7 (neither shown). The phase tracker is time-shared by the memories. Lane determination.-A lane counter (244, Fig. 9, not shown) maintains a running count; when the position of the receiver is known the corresponding lane is entered, manually, into the lane counter.

GB1263672A
1971-03-31
1972-03-17
Navigation receiver for use in a low frequency navigation system

Expired

GB1338863A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US12972171A

1971-03-31
1971-03-31

Publications (1)

Publication Number
Publication Date

GB1338863A
true

GB1338863A
(en)

1973-11-28

Family
ID=22441282
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB1263672A
Expired

GB1338863A
(en)

1971-03-31
1972-03-17
Navigation receiver for use in a low frequency navigation system

Country Status (4)

Country
Link

CA
(1)

CA969259A
(en)

DE
(1)

DE2215304A1
(en)

FR
(1)

FR2132223A1
(en)

GB
(1)

GB1338863A
(en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

FR2206508B2
(en)

*

1972-12-01
1977-08-05
Neo Tec Etude Applic Tech

DE3909758A1
(en)

*

1989-03-23
1990-10-04
Fraunhofer Ges Forschung
Method for self-location of moving objects on the basis of long-wave, mutually phase-locked signals

1972

1972-01-20
CA
CA132,848A
patent/CA969259A/en
not_active
Expired

1972-03-17
GB
GB1263672A
patent/GB1338863A/en
not_active
Expired

1972-03-29
DE
DE19722215304
patent/DE2215304A1/en
active
Pending

1972-03-30
FR
FR7211179A
patent/FR2132223A1/fr
not_active
Withdrawn

Also Published As

Publication number
Publication date

DE2215304A1
(en)

1972-10-05

FR2132223A1
(en)

1972-11-17

CA969259A
(en)

1975-06-10

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Legal Events

Date
Code
Title
Description

1974-04-10
PS
Patent sealed

1977-10-12
PLNP
Patent lapsed through nonpayment of renewal fees

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