A 1 GHz bandwidth acousto-optical spectrometer for airborne submillimetre astronomy

Schwaab, Gerhard; Meyer, K.; Roeser, Hans─Peter; Wal, P. van der; Wattenbach, R.; Wiedenhoever, W

doi:10.1088/0022-3735/22/7/018

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…In fact, these advantages have prompted the construction of acousto-optical spectrometers, not only for a number of earth based and air-borne (sub)-millimeter telescopes [8][9][10][11], but also for space missions such as the heterodyne instrument on board of Herschel [12].…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Broadband Millimeter-Wave Astrophysical Spectrometer with Triple Product Acousto-Optical Processor

Dagostino¹,

Shcherbakov²,

Arellanes³

et al. 2013

IJAA

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An advanced conceptual design of a high-bit-rate triple product acousto-optical processor is presented that can be applied in a number of astrophysical problems. We briefly describe the Large Millimeter Telescope as one of the potential observational infrastructures where the acousto-optical spectrometer can be successfully used. A summary on the study of molecular gas in relatively old (age > 10 Myr) disks around main sequence stars is provided. We have identified this as one of the science cases in which the proposed processor can have a big impact. Then we put forward triple product acousto-optical processor is able to realize algorithm of the space-and-time integrating, which is desirable for a wideband spectrum analysis of radio-wave signals with an improved resolution providing the resolution power of about 10 5 -10 6 . It includes 1D-acousto-optic cells as the input devices for a 2D-optical data processing. The importance of this algorithm is based on exploiting the chirp Z-transform technique providing a 2D-Fourier transform of the input signals. The system produces the folded spectrum, accumulating advantages of both space and time integrating. Its frequency bandwidth is practically equal to the bandwidth of transducers inherent in acousto-optical cells. Then, similar processor is able to provide really high frequency resolution, which is practically equal to the reciprocal of the CCD-matrix photo-detector integration time. Here, the current state of developing the triple product acousto-optical processor in frames of the astrophysical instrumentation is shortly discussed.

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Section: Introductionmentioning

confidence: 99%

High-Resolution Broadband Millimeter-Wave Astrophysical Spectrometer with Triple Product Acousto-Optical Processor

Dagostino¹,

Shcherbakov²,

Arellanes³

et al. 2013

IJAA

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“…There are many papers devoted to AD spectrum analysers for radioastronorny [1][2][3][4], so we discuss characteristics of AOS setups developed in our laboratory shortly but discussion of AO IPS for Solar observations [5] and AO dispersion compensator [6] is more detailed.…”

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confidence: 99%