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Improvements to a balloon-borne sun-seeker.
1Canadian Armament Research and Development Establishment, Valcartier, Quebec, Canada.
Applied Optics
|January 9, 2010
Summary
This study details upgrades to a balloon-borne sun-seeker, enhancing its pointing accuracy and reducing power consumption through advanced electronics and sensor placement for improved solar observation.
Area of Science:
- Astronomy
- Aerospace Engineering
- Instrumentation
Background:
- Commercial balloon-borne sun-seekers are crucial for solar observation.
- Previous designs faced limitations in power efficiency and pointing accuracy.
Purpose of the Study:
- To enhance the performance of a balloon-borne sun-seeker.
- To improve pointing accuracy and reduce power consumption.
Main Methods:
- Implemented transistorized circuits and solid-state switches to reduce power usage.
- Relocated silicon fine-pointing sensors near the spectrometer entrance slit to correct optical misalignment.
- Utilized operational amplifiers for weighted error signal summation.
- Incorporated radio command control for servo system gain adjustment.
Main Results:
- Significantly reduced power consumption compared to previous tube-based systems.
- Eliminated optical misalignment effects through strategic sensor placement.
- Achieved precise pointing control using operational amplifiers and a controllable servo system.
Conclusions:
- The upgraded sun-seeker offers improved efficiency and accuracy for solar observation missions.
- The modifications represent a significant advancement in autonomous solar tracking instrumentation.
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