{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T12:16:27Z","timestamp":1764936987790,"version":"build-2065373602"},"reference-count":16,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2018,5,6]],"date-time":"2018-05-06T00:00:00Z","timestamp":1525564800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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\u2014in 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.<\/jats:p>","DOI":"10.3390\/s18051445","type":"journal-article","created":{"date-parts":[[2018,5,7]],"date-time":"2018-05-07T03:12:21Z","timestamp":1525662741000},"page":"1445","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar"],"prefix":"10.3390","volume":"18","author":[{"given":"Bronis\u0142aw","family":"Stec","sequence":"first","affiliation":[{"name":"Faculty of Electronics, Military University of Technology, Gen. Urbanowicz St. No 2, 00-908 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0999-9784","authenticated-orcid":false,"given":"Waldemar","family":"Susek","sequence":"additional","affiliation":[{"name":"Faculty of Electronics, Military University of Technology, Gen. Urbanowicz St. No 2, 00-908 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,5,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1855","DOI":"10.1117\/1.601699","article-title":"Design, performance, and applications of a coherent ultrawideband random noise radar","volume":"37","author":"Naryanan","year":"1998","journal-title":"Opt. Eng."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"289","DOI":"10.2478\/v10178-010-0025-5","article-title":"Broadband microwave correlator of noise signals","volume":"17","author":"Susek","year":"2010","journal-title":"Metrol. Meas. Syst."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"868","DOI":"10.1109\/8.865218","article-title":"Doppler estimation using a coherent ultra wide-band random noise radar","volume":"48","author":"Narayanan","year":"2000","journal-title":"IEEE Trans. Antennas Propagat."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1109\/7.937470","article-title":"Receiver operating characteristics for the coherent UWB random noise radar","volume":"37","author":"Dawood","year":"2001","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"483","DOI":"10.12693\/APhysPolA.119.483","article-title":"Noise radar with microwave correlation receiver","volume":"119","author":"Susek","year":"2011","journal-title":"Acta Phys. Pol. A"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"759","DOI":"10.1109\/TAES.2014.130003","article-title":"Through-the-Wall Detection of Human Activities Using a Noise Radar With Microwave Quadrature Correlator","volume":"51","author":"Susek","year":"2015","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1214","DOI":"10.1109\/TAES.2010.5545184","article-title":"SAR Imaging with Noise Radar","volume":"46","author":"Tarchi","year":"2010","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"904","DOI":"10.1109\/TAES.2006.248211","article-title":"Doppler visibility of coherent ultrawideband random noise radar systems","volume":"42","author":"Li","year":"2006","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"467","DOI":"10.1109\/36.911106","article-title":"Polarimetric processing of coherent random noise radar data for buried object detection","volume":"39","author":"Xu","year":"2001","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1716","DOI":"10.1109\/TAES.2010.5595590","article-title":"Ultrawideband random noise radar design for through-wall surveillance","volume":"46","author":"Lai","year":"2010","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2327","DOI":"10.1109\/TAES.2013.120758","article-title":"Fast Clutter Cancellation for Noise Radars via Waveform Design","volume":"50","author":"Meller","year":"2014","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1017\/S1759078716000945","article-title":"Noise radar sidelobe suppression algorithm using mismatched filter approach","volume":"8","author":"Kulpa","year":"2016","journal-title":"Int. J. Microw. Wirel. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"816","DOI":"10.1109\/TAES.2017.2665145","article-title":"Filter-Based Design of Noise Radar Waveform with Reduced Sidelobes","volume":"53","author":"Kulpa","year":"2017","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2703","DOI":"10.1109\/TGRS.2003.816665","article-title":"Noise radar for range\/Doppler processing and digital beamforming using low-bit ADC","volume":"41","author":"Axelsson","year":"2003","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_15","unstructured":"Haykin, S. (2001). Random Processes in Communication Systems, John Wiley &Sons Inc.. [4th ed.]."},{"key":"ref_16","unstructured":"Bendat, J.S., and Piersol, A.G. (1971). Statistical Errors in Basic Estimates in Random Data: Analysis and Measurement Procedures, Wiley Interscience. [2nd ed.]."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/5\/1445\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:03:28Z","timestamp":1760195008000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/5\/1445"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,5,6]]},"references-count":16,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2018,5]]}},"alternative-id":["s18051445"],"URL":"https:\/\/doi.org\/10.3390\/s18051445","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2018,5,6]]}}}