Design of a new smaller lighter faraday rotator for ACERAD radar QOTL
Bibliographic record
Abstract
We describe a new Faraday rotator as part of the Quasi Optical Transmission Line (QOTL) on the Aerosol/Cloud/Ecosystems (ACE) mission. A QOTL design has been completed and laboratory tested and is the subject of a separate paper. A major component of the QOTL is a Faraday Rotator used in the simultaneous transmit and receive operation. It rotates the polarization of the transmitted and received signals by 45 degrees in opposite directions, thus creating a 90 degree polarization difference which is utilized by a linear polarizer to separate the two. This paper describes the design of a new rotator which is substantially lighter and smaller than a previous one used in the CloudSat radar jointly developed by JPL/NASA, Canadian Space Agency and other agencies. This is achieved by using better ferrite materials and a higher degree of optimization in the design. The weight and volume of the rotator have been substantially reduced to less than one third of the original. Furthermore, the RF performance of the new magnet design is much better than original design in the 94 GHz range. The new Faraday Rotator has been fabricated and tested with very good results.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.003 |
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 source (direct Gemma or distilled Codex), 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".