SCISAT-1 ACE Mission C&DH Unit Development
Bibliographic record
Abstract
The SCISAT-1 Atmospheric Chemistry Experiment (ACE) Mission is a part of the Canadian Space Agency’s (CSA’s) space science program, to support ongoing research in the areas of solarterrestrial relations, atmospheric sciences and space astronomy. Bristol Aerospace Limited is the CSA’s Spacecraft Prime Contractor for the ACE Mission. The ACE spacecraft will be launched on a Pegasus XL vehicle in mid-2002, co-manifested with a NASA spacecraft. A Control and Data Handling (C&DH) Unit is being developed by Bristol for the ACE Mission. This C&DH Unit will be responsible for all onboard command, control, monitoring and science data recording. This unit is being developed to support a range of Canadian small science missions, from Smallsats to Microsats. The unit is low power and light weight, and features a rad-tolerant core to assure reliable operation in a single string architecture. The C&DH Unit is comprised of a Controller Card (CC), Data Handling Card (DHC), Input/Output Card (IOC) and a Power Supply Card (PSC). Each card is housed in its own aluminum frame, and the frames are integrated into a vertical stack. The unit is expected to operate with 7 Watts orbit average power and uses a UTMC 80C196 16-bit processor running at 16 MHz to manage the satellite operations and perform attitude control. Mass storage of 1.5 Gbytes and CCSDS variable-rate telemetry up to 5 Mbits/sec are provided. This paper will present an overview of the ACE Mission and a description of the C&DH Unit, describing its architecture, hardware/software partitioning, FPGA functionality and key performance specifications.
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 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 | 0.001 |
| 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 | 0.001 |
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".