Response of the Receiving System
| Autor: | A. Richard Thompson, James M. Moran, George W. Swenson |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Astronomy and Astrophysics Library ISBN: 9783319444291 Interferometry and Synthesis in Radio Astronomy, Second Edition |
| DOI: | 10.1007/978-3-319-44431-4_6 |
| Popis: | This chapter is concerned with the response of the receiving system that accepts the signals from the antennas, amplifies and filters them, and measures the cross-correlations for the various antenna pairs. We show how the basic parameters of the system affect the output. Some of the effects were introduced in earlier chapters and are here presented in a more detailed development that leads to consideration of system design in Chaps. 7 and 8. At some point in the processing chain between the antenna and the correlator output, the form of the signals is changed from an analog voltage to a digital format, and the resulting data are thereafter processed by computer-type hardware. This does not affect the mathematical analysis of the processing and is not considered in this chapter. However, the digitization introduces a component of quantization noise, which is analyzed in Chap. 8 |
| Databáze: | OpenAIRE |
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