Progress in the development of the CCRS along-track interferometer
Bibliographic record
Abstract
The CCRS C-band SAR owned and operated by the Canada Centre for Remote Sensing (CCRS) was modified in 1991 to operate in an across-track C-band interferometric mode for derivation of terrain elevation. This mode has now been extended such that the two C-band receivers can be used with two separate, almost identical, antennas aligned in the along-track direction thereby creating a SAR capable of detecting and measuring target radial motion. Two new C(H) antennas have been mounted on the right-hand side of the Convair 580 to form the along-track C-band interferometer. The antennas share a common, rigid, mounting structure and the phase centres are separated by 0.5 m. The primary application for this mode will be in ocean monitoring R&D; SAR wave and wake imaging, measurement of coastal and ocean currents, estimation of pack-ice drift, detection of sub-surface sand waves through current modulation, etc. while the short baseline dictated by the existing radome leads to a relatively low sensitivity to radial motion, approximately 24/spl deg/ per m/s, the time between image formation at the same azimuth geometry is small (less than 2 ms) with respect to typical C-band ocean coherence times (around 50-100 ms). This, combined with a good signal-to-noise ratio, will allow relatively low phase noise on the interferometric products and therefore adequate sensitivity to radial motion for most situations. A description of the new system and of ground and airborne testing are given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".