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Open AccessArticle

Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar

Faculty of Electronics, Military University of Technology, Gen. Urbanowicz St. No 2, 00-908 Warsaw, Poland
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Author to whom correspondence should be addressed.
Sensors 2018, 18(5), 1445; https://doi.org/10.3390/s18051445
Received: 14 March 2018 / Revised: 3 May 2018 / Accepted: 4 May 2018 / Published: 6 May 2018
(This article belongs to the Special Issue Sensors for Microwave Imaging and Detection)
Determination of the signal power-to-noise power ratio on the input and output of reception systems is essential to the estimation of their quality and signal reception capability. This issue is especially important in the case when both signal and noise have the same characteristic as Gaussian white noise. This article considers the problem of how a signal-to-noise ratio is changed as a result of signal processing in the correlation receiver of a noise radar in order to determine the ability to detect weak features in the presence of strong clutter-type interference. These studies concern both theoretical analysis and practical measurements of a noise radar with a digital correlation receiver for 9.2 GHz bandwidth. Firstly, signals participating individually in the correlation process are defined and the terms signal and interference are ascribed to them. Further studies show that it is possible to distinguish a signal and a noise on the input and output of a correlation receiver, respectively, when all the considered noises are in the form of white noise. Considering the above, a measurement system is designed in which it is possible to represent the actual conditions of noise radar operation and power measurement of a useful noise signal and interference noise signals—in particular the power of an internal leakage signal between a transmitter and a receiver of the noise radar. The proposed measurement stands and the obtained results show that it is possible to optimize with the use of the equipment and not with the complex processing of a noise signal. The radar parameters depend on its prospective application, such as short- and medium-range radar, ground-penetrating radar, and through-the-wall detection radar. View Full-Text
Keywords: radar receiver; correlation; radar clutter; signal-to-noise ratio; radar measurements radar receiver; correlation; radar clutter; signal-to-noise ratio; radar measurements
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MDPI and ACS Style

Stec, B.; Susek, W. Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar. Sensors 2018, 18, 1445. https://doi.org/10.3390/s18051445

AMA Style

Stec B, Susek W. Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar. Sensors. 2018; 18(5):1445. https://doi.org/10.3390/s18051445

Chicago/Turabian Style

Stec, Bronisław; Susek, Waldemar. 2018. "Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar" Sensors 18, no. 5: 1445. https://doi.org/10.3390/s18051445

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