Design Study for an Improved Operational Radiometer.
Abstract
A radiometer design capable of measuring solar radiation reflected from the earth (0.18 to 4.0 micron range) and infrared radiation from the earth (3.5 to 40 micron range) from a space satellite is discussed. A model of the radiometer was built that is virtually flyable. The radiometer was improved by: reducing error in the optics system by moving the filter between the vibrating-reed chopper and the detector; improving the constancy of the detector cavity temperature over a wide environmental range; significantly improving the stability and reliability of the entire electronics stack and the scanning assembly and; simplifying the mechanical assembly and disassembly of the unit. A fundamentally superior instrument would be realized by: using a reflective re-imaging optical system; using a low impedance detector; eliminating detector cavity temperature control; exploring sub-cooling of the detector and; expanding the output scale over the target range of 200 to 300 K. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1961
- Accession Number
- AD0267935
Entities
People
- D.l. Fain
- D.s. Johnson
- R.l. Hershey
Organizations
- Ball Aerospace & Technologies