MétaCan
Menu
Back to cohort
Record W175825111

Evaluation of Simulated RADARSAT-2 Polarimetry Products

2007· article· en· W175825111 on OpenAlexaboutno aff
P.W. Vachon

Bibliographic record

VenueDefense Technical Information Center (DTIC) · 2007
Typearticle
Languageen
FieldEngineering
TopicSynthetic Aperture Radar (SAR) Applications and Techniques
Canadian institutionsnot available
Fundersnot available
KeywordsPolarimetryRemote sensingSynthetic aperture radarComputer scienceRadarRadar imagingGeology
DOInot available

Abstract

fetched live from OpenAlex

This report presents an evaluation of simulated RADARSAT-2 polarimetry products. The RSAT2SIMU software developed by MDA simulates RADARSAT-2 products from Environment Canada (EC) CV-580 synthetic aperture radar (SAR) single-look complex (SLC) data by increasing the noise floor and degrading the image resolution. The evaluation includes observations of the reduction in the probability of missed detection for polarimetric relative to single channel radar operation for ship detection, and the potential benefit of polarimetric target decomposition to generate ship target classification features and to segment the ship target of interest from the ocean background. A main recommendation is to develop algorithms that combine all information available from polarimetric signature analysis methods to aid in ship classification. The results show that the ship detection and target classification methods developed using airborne polarimetric data can potentially be applied to RADARSAT-2 data.

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 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)0.002
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: Other design · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.983
Threshold uncertainty score0.676

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
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 head0.019
GPT teacher head0.266
Teacher spread0.246 · 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 teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designOther design
Domainnot available
GenreEmpirical

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

Citations0
Published2007
Admission routes1
Has abstractyes

Explore more

Same venueDefense Technical Information Center (DTIC)Same topicSynthetic Aperture Radar (SAR) Applications and TechniquesFrench-language works237,207