CA1131317A - Procede et dispositif pour detecter et interpreter un signal de detresse - Google Patents
Procede et dispositif pour detecter et interpreter un signal de detresseInfo
- Publication number
- CA1131317A CA1131317A CA345,102A CA345102A CA1131317A CA 1131317 A CA1131317 A CA 1131317A CA 345102 A CA345102 A CA 345102A CA 1131317 A CA1131317 A CA 1131317A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- distress
- message
- phase
- subcarrier
- 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
- 230000009429 distress Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 17
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims description 6
- 238000013475 authorization Methods 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008520 organization Effects 0.000 description 7
- 230000001427 coherent effect Effects 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 244000045947 parasite Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/016—Personal emergency signalling and security systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/03—Constructional details, e.g. casings, housings
- H04B1/034—Portable transmitters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Alarm Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE193301A BE873970A (fr) | 1979-02-06 | 1979-02-06 | Systeme de telecommunications de detresse par satellite |
| BE0/193.301 | 1979-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1131317A true CA1131317A (fr) | 1982-09-07 |
Family
ID=3843181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA345,102A Expired CA1131317A (fr) | 1979-02-06 | 1980-02-05 | Procede et dispositif pour detecter et interpreter un signal de detresse |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4352199A (Direct) |
| EP (1) | EP0023511B1 (Direct) |
| JP (1) | JPS56500276A (Direct) |
| CA (1) | CA1131317A (Direct) |
| DE (1) | DE3070138D1 (Direct) |
| DK (1) | DK152636C (Direct) |
| NO (1) | NO153200C (Direct) |
| WO (1) | WO1980001631A1 (Direct) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4547778A (en) * | 1981-06-09 | 1985-10-15 | Texas Instruments Incorporated | Method and apparatus for automatic distress call signal transmission |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3430143A (en) * | 1965-03-15 | 1969-02-25 | Gen Dynamics Corp | Communications system wherein information is represented by the phase difference between adjacent tones |
| US3432755A (en) * | 1966-10-03 | 1969-03-11 | Joe Moreno | Distress signalling device for submarine and aircraft |
| US3581208A (en) * | 1968-12-16 | 1971-05-25 | William Buehrle Jr | Emergency warning and identification apparatus for two-way radio communication system |
| US3668526A (en) * | 1969-09-12 | 1972-06-06 | Jerome S Raskin | Communication system having means for causing a distress signal |
| FR2113907B1 (Direct) * | 1970-11-12 | 1974-07-19 | Int Standard Electric Corp | |
| US3723876A (en) * | 1971-06-21 | 1973-03-27 | G Seaborn | Emergency distress signaling system |
| JPS4948663B2 (Direct) * | 1972-06-07 | 1974-12-23 | ||
| US3914692A (en) * | 1973-08-29 | 1975-10-21 | Jr George C Seaborn | Emergency communication system |
| BE873970A (fr) * | 1979-02-06 | 1979-05-29 | Organisation Europ De Rech S S | Systeme de telecommunications de detresse par satellite |
-
1980
- 1980-01-25 JP JP50046780A patent/JPS56500276A/ja active Pending
- 1980-01-25 DE DE8080900365T patent/DE3070138D1/de not_active Expired
- 1980-01-25 WO PCT/EP1980/000003 patent/WO1980001631A1/de not_active Ceased
- 1980-01-25 US US06/205,447 patent/US4352199A/en not_active Expired - Lifetime
- 1980-02-05 CA CA345,102A patent/CA1131317A/fr not_active Expired
- 1980-02-05 NO NO800306A patent/NO153200C/no unknown
- 1980-08-15 EP EP80900365A patent/EP0023511B1/fr not_active Expired
- 1980-10-06 DK DK421780A patent/DK152636C/da not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3070138D1 (en) | 1985-03-28 |
| NO800306L (no) | 1980-08-07 |
| EP0023511B1 (fr) | 1985-02-13 |
| NO153200C (no) | 1986-01-29 |
| NO153200B (no) | 1985-10-21 |
| DK152636B (da) | 1988-03-28 |
| DK152636C (da) | 1988-08-15 |
| JPS56500276A (Direct) | 1981-03-05 |
| EP0023511A1 (fr) | 1981-02-11 |
| US4352199A (en) | 1982-09-28 |
| DK421780A (da) | 1980-10-06 |
| WO1980001631A1 (fr) | 1980-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5422913A (en) | High frequency multichannel diversity differential phase shift (DPSK) communications system | |
| EP0013343B1 (fr) | Procédé et dispositif pour détecter une séquence pseudo-aléatoire de changements de phase de 0 degré et 180 degrés de la porteuse dans un récepteur de données | |
| EP0006121B1 (fr) | Procédé et dispositif pour initialiser un égaliseur adaptatif à partir d'un signal de données inconnu dans un système de transmission utilisant la modulation d'amplitude en quadrature | |
| EP0556361B1 (fr) | Procede et dispositif pour multiplexer des signaux de donnees | |
| EP0881804B1 (fr) | Procédé de détermination d'un format d'émission de symboles dans un système de transmission et système associé | |
| JPH0435090B2 (Direct) | ||
| EP0608024A1 (fr) | Système de transmission avec récupération de rythme | |
| EP2387189B1 (fr) | Procédé de démodulation de signaux d'un système multi-accès pouvant entrer en collision et équipement de mise en oeuvre | |
| EP0709980A1 (fr) | Sychronisation de fréquence pour système MDFO | |
| EP0436714A1 (fr) | Systeme de communications a acces multiple par repartition a codes avec porteuse activee par la voix de l'usager et synchronisation par code. | |
| FR2533095A1 (fr) | Procede et dispositif de demodulation d'une onde porteuse modulee en phase par une onde sous-porteuse qui est modulee en deplacement de phase par des signaux en bande de base | |
| EP0012884B1 (fr) | Procédé et dispositif pour détecter une séquence pseudo-aléatoire de deux symboles dans un récepteur de données utilisant une modulation à double bande latérale-porteuse en quadrature | |
| FR2801155A1 (fr) | Appareil et procede d'exploration de cellules a grande vitesse pour dispositif de communication | |
| CA2045881C (fr) | Procede de transmission numerique a etalement de spectre par sequence directe a changement de sequences en cours de transmission, et emetteur et recepteur le mettant en oeuvre | |
| CA1131317A (fr) | Procede et dispositif pour detecter et interpreter un signal de detresse | |
| FR2786965A1 (fr) | Procede de recuperation de porteuse de signal | |
| EP0702468B1 (fr) | Dispositif d'identification d'une séquence de synchronisation | |
| CA2296204C (fr) | Satellite a couverture omnidirectionnelle | |
| EP0715434A1 (fr) | Dispositif de détection de présence d'une porteuse modulée en numérique | |
| Sahay et al. | SDR based single channel S-AIS receiver for satellites using system generator | |
| RU2205496C1 (ru) | Способ формирования и обработки сложного сигнала в помехозащищенных радиосистемах | |
| FR2621132A1 (fr) | Procede et dispositif de mesures de distances | |
| EP0053051B1 (fr) | Procédé de transmission des signaux d'exploitation d'un faisceau Hertzien numérique, émetteur et récepteur pour la mise en oeuvre d'un tel procédé | |
| EP0272956B1 (fr) | Système de transmission numérique à démodulation cohérente aménagé pour la transmission simultanée de deux messages binaires | |
| FR2812503A1 (fr) | Procede et systeme de codage-decodage d'informations numeriques dans un signal sonore transmis par un canal reverberant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |