Linear arrays of microbolometers for space applications
Bibliographic record
Abstract
Space-grade linear arrays of microbolometers are a new class of sensors intended for pushbroom scanned remote sensing and atmospheric sounding with limited power and mass budgets. Such applications call for: (i) microbolometers with increased speed and detectivity; (ii) radiation hard CMOS circuits allowing for simultaneous data readout from all microbolometers; and (iii) robust radiometric packages. A series of single stage and double stage microbolometers with thermal conductances from 30 to 250 nW/K have been investigated. The time constants measured on single stage and double stage devices were in good agreement with the conductances, showing values as small as 6 ms. Low frequency detectivities were found to be in the range from 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">8</sup> to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">9</sup> cm.Hz <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1/2</sup> /W. Arrays of 512x3 microbolometers were monolithically built on CMOS circuits laid out such that all pixels can be read in parallel with their own signal chain. When integrated into a custom designed radiometric package, these arrays exhibit NETD values better than 80 mK to a 300 K scene using F/0.87 optics in the 8–12 um band and 50 ms integration time. The preliminary environmental tests performed on arrays integrated into a custom designed radiometric package indicated that they would meet the requirements for space operation.
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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".