Computer Science – Performance
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..433j&link_type=abstract
IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 1 (A91-23201 08-89
Computer Science
Performance
Dynamic Models, Phased Arrays, Telescopes, Computer Techniques, Frequency Response, Performance Tests, White Noise
Scientific paper
A phased-array telescope is formed by combining a number of optical telescopes to yield the resolution of a single much larger telescope. One such telescope, the Multipurpose Multiple Telescope Testbed (MMTT), consists of four 20-cm-aperture telescopes phased together with a 30-arcmin field of view. This paper illustrates the model identification of the MMTT system. Each of the 4 channels of the system consists of over 30 subsystems and/or components. Various experimental tests were set up for the MMTT components using a white Gaussian noise source on a spectrum analyzer. The input/output signals for each experimental set up were measured and an ASCII file was created on a personal computer. The transfer function of each subsystem was identified using either the spectrum analyzer and/or through standard system identification software on an AT-class PC. The model thus identified can be used to study system's behavior by simulation as well as designing various controllers for tilt, piston, and pupil geometry control purposes.
Carreras Richard A.
Jamshidi Mohammad
Meinhardt J. A.
Miller Natalia
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