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The sensitivity of a very long baseline interferometer (1980)

Rogers, A. E. E.

In: CASI

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Publication Date: 2016-06-07

Description: The theoretical sensitivity of various methods of acquiring and processing interferometer data are compared. It is shown that for a fixed digital recording capacity one bit quantization of single sideband data filtered with a rectangular bandpass and sampled at the Nyquist rate yields the optimum signal to noise ratio. The losses which result from imperfect bandpass, poor image rejection, approximate methods of fringe rotation, fractional bit correction, and loss of quadrature are discussed. Also discussed is the use of the complex delay function as a maximum likelihood fringe estimator.

Keywords: EARTH RESOURCES AND REMOTE SENSING

Type: NASA. Goddard Space Flight Center Radio Interferometry; p 275-281

Format: application/pdf

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