Spectral-Selective Radiometer Unit with Radio-Interference Protection
We consider the operation principle of a spectral-selective radiometer unit with a bandwidth of up to 1 GHz, which calculates the spectra of the signals received by the antenna in real time with the subsequent exclusion of spectral components at the radio-interference frequencies. The latter allows one to perform radiometric measurements in continuum when exposed to radio-frequency interference without using the filtering methods of its selection in the widedband radiometer receiving channel. Under the radio-interference action, the observation results confirm the high accuracy of the radiometric measurements in continuum, which were conducted using the radio telescopes of the “Kvazar-KVO” complex.
KeywordsRadio Telescope Noise Temperature Radiometric Measurement Digital Sample Instantaneous Spectrum
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- 1.N. A. Esepkina, D. V. Korol’kov, and Yu. N. Parijskij, Radio Telescopes and Radiometers [in Russian], Nauka, Moscow (1973).Google Scholar
- 4.A. M. Finkel’shtein, A. V. Ipatov, and S. G. Smolentsev, Zeml. Vselen., No. 4, 12 (2004).Google Scholar
- 5.N. E. Kol’tsov, “Radiometric method for recording weak wideband radio-frequency radiation,” Patent. RU 2431852 C2 [in Russian], Bull. No. 29 (2011).Google Scholar
- 6.N. E. Kol’tsov, D. A. Marshalov, V. V. Mardyshkin, and A. A. Evstigneev, Proc. Inst. Appl. Astron., No. 23, 224 (2012).Google Scholar
- 7.R. E. Blahut, Fast Algoritms for Digital Signal Processing, Addison-Wesley, Boston (1985).Google Scholar
- 8.N. E. Kol’tsov, “A method for measuring the energy spectrum of narrowband space radio-frequency radiation,” Patent Application 2008115184/28 [in Russian], Bull. No. 14 (2008).Google Scholar
- 10.A. A. Evstigneev, A. S. Lavrov, V. V. Mardyshkin, and V. K. Chernov, Proc. Inst. Appl. Astron., No. 28, 110 (2014).Google Scholar