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Record W1548761927 · doi:10.5555/1498965.1498971

Cospas-Sarsat: an international satellite system for search and rescue

2002· article· en· W1548761927 on OpenAlexaff
James V. King

Bibliographic record

VenueSpace Communications · 2002
Typearticle
Languageen
FieldEngineering
TopicSatellite Communication Systems
Canadian institutionsCommunications Research Centre Canada
Fundersnot available
KeywordsBeaconSearch and rescueDistressSatelliteSatellite systemTelecommunicationsService (business)Computer scienceCommunications satelliteComputer securityGlobal Positioning SystemEngineeringBusinessMedicine

Abstract

fetched live from OpenAlex

This paper describes an existing worldwide satellite system - Cospas-Sarsat - that provides the valuable, humanitarian service of pinpointing the locations of disaster survivors. The system demonstrates international cooperation in space and is used in many applications. This system is unique in the way that it is funded and operated, while its use remains free of charge to the end-user in distress. Cospas-Sarsat, an international satellite system for search and rescue, began operations in 1982, and has been credited with saving thousands of lives since then. Hundreds of thousands of aviators, mariners and land users worldwide are equipped with Cospas-Sarsat distress beacons, which could help save their lives in emergency situations anywhere in the world. This paper outlines system design and operation. Cospas-Sarsat satellites provide global coverage searching for user distress signals. Tracking stations on six continents receive the satellite-relayed distress signals, compute the locations of the distress events and initiate calls for help to the appropriate rescue authorities. The paper presents the evolution, current status and future plans of the system and describes some real distress cases where it helped save lives.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.006
Threshold uncertainty score0.020

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0060.004

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.096
GPT teacher head0.308
Teacher spread0.212 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreOther

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations7
Published2002
Admission routes1
Has abstractyes

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