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Record W85926621

Viability Assessment Report on TTRDP GMTI Constallation Study

2004· article· en· W85926621 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueDefense Technical Information Center (DTIC) · 2004
Typearticle
Languageen
FieldEngineering
TopicSpacecraft Design and Technology
Canadian institutionsnot available
Fundersnot available
KeywordsConstellationComputer scienceSatelliteSatellite constellationScale (ratio)Systems engineeringSet (abstract data type)SimulationReal-time computingRemote sensingEngineeringAerospace engineeringGeographyCartography
DOInot available

Abstract

fetched live from OpenAlex

Driven by the potential military utility of a satellite constellation providing wide-area space based surveillance, the Trilateral Technology Research and Development Program (TTRDP) envisaged a framework that supports constellation concept design, assessment modeling and system feasibility studies. The concept design's "study and evolve" approach was institutionalized by formulating various teams, each oriented towards distinct research activity, to cooperatively feed on each others inferences. The performance assessment activity kicked-off with an initial set of constellation design parameters with 36 satellites distributed in 12 orbital planes inclined at 850. The outcome of iterative research and assessment activities revealed that 27 satellites distributed in nine orbital planes at 63.40 inclination produces equally acceptable results over most of the globe. This report is the result of an effort to deduce the viability of various design trade-offs that the two sets of satellite orbital parameters and constellation patterns can render on the Measure of Performance (MOP). Simulation Laboratory (SimLab), a simulator built in-house at DRDC Ottawa, and Satellite Tool Kit (STK), a Commercial Off-The-Shelf (COTS) tool, were used as performance modelling and assessment tools to obtain the MOP and statistically evaluate the two constellation patterns. The assessment presented in this report quantifies the MOP based on coverage, detection and tracking analysis, which SimLab exercised on a representative Area of Interest (AOI) and STK on a global scale. With most of the satellite and sensor's parameters being held constant, a comparative performance validation was conducted against both constellation patterns.

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.373
Threshold uncertainty score0.818

Codex and Gemma teacher scores by category

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

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 head0.016
GPT teacher head0.264
Teacher spread0.249 · 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