Abstract

A new 1024-channel digital autocorrelation spectrometer has been designed and built employing the 'one-bit' method of spectral analysis. It can be used with a maximum sampling rate of 20 MHz corresponding to a nominal bandwidth of 10 MHz. Other bandwidths available are 5 MHz, 2.5 MHz through to 39 kHz in binary steps. The 1024 channels are divided into eight groups of 128 and all groups may be used for either auto- or cross-correlation. A description of the principles of operation and the design philosophy of the new machine is given. Examples are given of observations taken with the instrument.

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