Detailed Component Design for a Compact Environmental Anomaly Sensor (CEASE)
Abstract
As the size and sophistication of spacecraft have increased, anomalies in operational performance caused by the interaction of the energetic- particle population and the spacecraft have likewise increased. The Compact Environmental Anomaly Sensor (CEASE) is being developed as a small, low-power device to monitor space weather and provide autonomous warning of conditions that could cause operational anomalies. Based on the sensor-design and trade-off studies for CEASE, a dosimeter set consisting of solid-state detectors behind aluminum absorbers (of several thicknesses) has been chosen. The outputs of the detectors are fed into algorithms that warn of certain anomalies: (1) surface dielectric charging, (2) deep dielectric charging, (3) total radiation dose behind 0.035 g/cm to the 2nd power, (4) total dose behind 0.41 g/cm to the 2nd power, and (5) single event upsets. From seven quantities derived by algorithm processing, eight warning levels (1, 3, 100...3000 x base) are obtained for each of the five anomalies. Level flags can then be selected for a particular application. For such a CEASE instrument, we estimate a volume of 64 in to the 3rd power (4-inch cube), a weight of 2 pounds, and power dissipation of 2 watts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 16, 1992
- Accession Number
- ADA261729
Entities
People
- Alan C. Huber
- David Sperry
- John A. Pantazis
- John O. Mcgarity
- Paul Okun