Noise adding radiometer improvement
Simple computer software modification compensates for nonideal detector characteristics to provide improved system performance.
Gardner, R. A.↗
Engineering topics
Gardner, R. A.
Publications and source records attributed to Gardner, R. A..
Data acquisition for solar and wind energy
Versatile automatic system collects data from wind and solar energy sensors. System allows changes in data types, number of channels, sensor location and speed of recording.
Gardner, R. A.↗
Precision insolation measurement under field conditions
Work at the Jet Propulsion Laboratory had resulted in the development of a primary absolute cavity radiometer (PACRAD), which was recently accepted as an international standard of irradiance. The development of an wall-weather, field-worthy solar radiometer based on the PACRAD is discussed, and its calibration stability over a two-year period in the field is described.
Reid, M. S.↗
Precision insolation measurement under field conditions
The paper describes a precision insolation instrument - the Mark 3 Kendall Radiometer - developed for field survey work and for use as a calibration transfer standard. The instrument, which can be used to make accurate measurements of solar irradiance, has a windowless black cavity receptor mounted in a massive heat sink and has equal sensitivity to ultraviolet, infrared, and visible radiation. Attention is given to a calibration stability analysis over two years of operation.
Reid, M. S.↗
A versatile data acquisition system for Goldstone
A data acquisition system set up at Goldstone was described. It is capable of recording a wide variety of parameters from widely separated geographical locations with varying integration times and recording speeds. It is fast, accurate, and modular in form so that it can be readily expanded. The accuracies of the system are discussed, and examples of data recorded with the system's capability of operation with preprocessing are given.
Reid, M. S.↗
High-accuracy programable square-law detector system
Programable system introduces correction factor to compensate for detector deviation from square-law response. If detector output voltage is V, the corrected output voltage is determined as V corrected = aV squared where 'a' is correction factor. Factor is determined and used automatically with digital computer techniques.
Reid, M. S.↗
A new broadband square law detector
A broadband constant law detector was developed for precision power measurements, radio metric measurements, and other applications. It has a wide dynamic range and an accurate square law response. Other desirable characteristics, which are all included in a single compact unit, are: (1) high-level dc output with immunity to ground loop problems; (2) fast response times; (3) ability to insert known time constants; and (4) good thermal stability. The detector and its performance are described in detail. The detector can be operated in a programmable system with a ten-fold increase in accuracy. The use and performance of the detector in a noise-adding radiometer system is also discussed.
Reid, M. S.↗
New broadband square-law detector
Compact device has wide dynamic range, accurate square-law response, good thermal stability, high-level dc output with immunity to ground-loop problems, ability to insert known time constants for radiometric applications, and fast response times compatible with computer systems.
Reid, M. S.↗