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1. pdev_birdies_25jun07
... sine wave test . Topside data . ... We have about 10 cycles across the tx window. the sine wave does not repeat at the ipp rate. ... Top: spectra of 20000 tx samples. 2nd: spectra of 65000 data samples. 3rd: blowup of tx spectra showing sine wave . 4th: blowup of data spectra showing sine wave. Page 2: Measure phase differences of the sampled sine wave for 4500 ipps . Compute the phase of the sine wave for all data and tx samples: phDataSmp[nsmp,nipps],phTxSmp[nsmp,nipps]. ...
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Ссылки http://www.naic.edu/~phil/hardware/rdev/19oct09_test.html -- 9.2 Кб -- 29.10.2009
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2. http://www.naic.edu/~phil/mbeam/hipass.pdf
... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...
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Ссылки http://www.naic.edu/~phil/mbeam/hipass.pdf -- 370.1 Кб -- 14.03.2003
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