FR2246128A1 - Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission - Google Patents

Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission

Info

Publication number
FR2246128A1
FR2246128A1 FR7327287A FR7327287A FR2246128A1 FR 2246128 A1 FR2246128 A1 FR 2246128A1 FR 7327287 A FR7327287 A FR 7327287A FR 7327287 A FR7327287 A FR 7327287A FR 2246128 A1 FR2246128 A1 FR 2246128A1
Authority
FR
France
Prior art keywords
same frequency
network system
radio network
satellite radio
uses several
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
Application number
FR7327287A
Other languages
French (fr)
Other versions
FR2246128B1 (en
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.)
Thales SA
Original Assignee
Dassault Electronique SA
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.)
Filing date
Publication date
Application filed by Dassault Electronique SA filed Critical Dassault Electronique SA
Priority to FR7327287A priority Critical patent/FR2246128A1/en
Publication of FR2246128A1 publication Critical patent/FR2246128A1/en
Application granted granted Critical
Publication of FR2246128B1 publication Critical patent/FR2246128B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/10—Arrangements for reducing cross-talk between channels

Abstract

Each of a number of separate intermittent radio transmissions on the same frequency have time intervals between successive transmissions which are irregular and uncorrelated, thus reducing time-coincidence and consequent mutual interference especially when received on the same receiver which may be installed in a satellite. The time intervals are controlled by multivibrators having time constants adjustable e.g. by having a number n of resistors in a circuit arranged to provide any one of n! time intervals. The apparatus may use flip-flops to control the switching of the resistors R1, R2...... Each transmitter on the given wavelength has its own characteristic 'signature' of intervals between bursts of transmissions, so that when two transmitters are working at once, coincidence between the two cannot occur for long periods.
FR7327287A 1973-07-25 1973-07-25 Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission Granted FR2246128A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7327287A FR2246128A1 (en) 1973-07-25 1973-07-25 Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7327287A FR2246128A1 (en) 1973-07-25 1973-07-25 Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission

Publications (2)

Publication Number Publication Date
FR2246128A1 true FR2246128A1 (en) 1975-04-25
FR2246128B1 FR2246128B1 (en) 1978-02-17

Family

ID=9123117

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327287A Granted FR2246128A1 (en) 1973-07-25 1973-07-25 Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission

Country Status (1)

Country Link
FR (1) FR2246128A1 (en)

Also Published As

Publication number Publication date
FR2246128B1 (en) 1978-02-17

Similar Documents

Publication Publication Date Title
GB905128A (en) Improvements in radio links
JPS5328308A (en) Countermeasure system for trouble o f mobile radio
ES419590A1 (en) Remote control system utilizing signal frequency sequence
SE7315253L (en)
DK126467B (en) Transmission system with a transmitter and a receiver for transmitting information in a prescribed frequency band as well as transmitter and receiver for use in this system.
JPS52130589A (en) Mobile radio controllig system
FR2246128A1 (en) Satellite radio network system - uses several ground transmitters on same frequency each with characteristic intermittent transmission
CA969240A (en) Four channel fm transmitter, receiver and transmission system
DK126288B (en) Transmission system with a transmitter and a receiver for transmitting information in a prescribed frequency band and receiver for use in this system.
JPS52149401A (en) Diversity system in mobile communication
JPS5789360A (en) Transmitting device
JPS52149085A (en) Radar apparatus
ZA773172B (en) Electronic communication receiving equipment,especially television or radio receiver
JPS5255405A (en) Pilot test system
PAUK Noise immunity of the practical noncoherent reception of multifrequency signals in a fading channel(Noise stability during noncoherent reception of frequency shift keyed signal by receiver with finite Q predetector integrators in presence of fading)
JPS52123191A (en) Radar equipment
GLAZOV Periodic numerical sequences for forming noise-like signals with frequency modulation(Noiselike FM signals shaping by numerical periodic pseudoeven sequences, analyzing FSK signals)
JPS5210015A (en) Transmitter and receiver with wide band range cable
JPS5452402A (en) Data transmitter
JPS5250605A (en) Receiving device
JPS5344787A (en) Transmitter and receiver
JPS53111215A (en) Confirmation communication system
JPS5344789A (en) Transmitter and receiver
JPS5344788A (en) Transmitter/receiver
NGUEN The properties of the input circuit of a receiver containing a tunnel diode(signal selectivity and noise level reduction)

Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse