Frequency Resolution of Acousto-Optical Spectrometer,
Abstract
This paper discusses the frequency resolution of an acoustic-optical spectrometer system under influences of deflector's spectral resolution, coherent light-beam truncation ratio, and photodiode array's response. The broadening of the resoluble line-pattern caused by the response of a photodiode pixel has been computed. According to this discussion the authors proposed the selecting principles for design parameters of the acousto-optical spectrometer including light-beam truncation ratio, focal length of Fourier transform lens, and number of photodiode array elements, i.e. the quantitative criteria for specific observational necessities with an acousto-optical spectrometer considered with resolution, bandwidth, and sidelobes of instrumental profile comprehensively. An experimental measurement of the frequency resolution to verify above theoretical computations has also been carried out.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 1994
- Accession Number
- ADA289611
Entities
People
- Shen Jianjun
- Wang Jingzheng
Organizations
- National Air and Space Intelligence Center