{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:37:11Z","timestamp":1760146631409,"version":"build-2065373602"},"reference-count":47,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,11,27]],"date-time":"2024-11-27T00:00:00Z","timestamp":1732665600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Natural Science Foundation for Young Scientists of China under Grant","award":["62101558"],"award-info":[{"award-number":["62101558"]}]},{"name":"Guangdong Science and Technology Department under Grant","award":["2023B1212060024"],"award-info":[{"award-number":["2023B1212060024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The velocity\/distance trade-off poses a fundamental challenge in pulsed Doppler weather radar systems and is known as the velocity\/distance dilemma. Techniques such as multiple-pulse repetition frequency, staggered pulse repetition time (PRT), and pulse phase coding are commonly used to mitigate this issue. The current study evaluates the adaptability\/capability of a specific type of low-capture signal called the non-uniform PRT (NPRT) through analyzing the weather target characteristics of typical velocity distributions. The spectral moments estimation (SME) signal-processing algorithm of the NPRT weather echo is designed to calculate the average power, velocity, and spectrum width of the target. A comprehensive error analysis is conducted to ascertain the efficacy of the NPRT processing algorithm under influencing factors. The results demonstrate that the spectral parameters of weather target echo with a velocity of [\u221250,50] m\/s through random-jitter NPRT signals align with radar functionality requirements (RFRs). Notably, the NPRT waveform resolves the inherent conflicts between the maximum unambiguous distance and velocity and elevates the upper limit of the maximal observation velocity. The evaluation results confirm that nonlinear radar signal processing technology can improve a radar\u2019s detection performance and provide a new method for realizing the multifunctional observation of radar in different applications.<\/jats:p>","DOI":"10.3390\/rs16234435","type":"journal-article","created":{"date-parts":[[2024,11,27]],"date-time":"2024-11-27T08:17:42Z","timestamp":1732695462000},"page":"4435","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Enhancing Weather Target Detection with Non-Uniform Pulse Repetition Time (NPRT) Waveforms"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7401-9415","authenticated-orcid":false,"given":"Luyao","family":"Sun","sequence":"first","affiliation":[{"name":"Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen 518083, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5551-4645","authenticated-orcid":false,"given":"Tao","family":"Wang","sequence":"additional","affiliation":[{"name":"Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen 518083, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1109\/MSP.2009.932123","article-title":"Fundamentals of Radar Signal Processing (Richards, M.A.; 2005) [Book review]","volume":"26","author":"Miller","year":"2009","journal-title":"IEEE Signal Process. 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