{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T15:55:05Z","timestamp":1774454105645,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T00:00:00Z","timestamp":1774396800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Guangxi Science and Technology Project","award":["Gui Ke AB23026120"],"award-info":[{"award-number":["Gui Ke AB23026120"]}]},{"name":"Guangxi Science and Technology Project","award":["Gui Ke AA22068001"],"award-info":[{"award-number":["Gui Ke AA22068001"]}]},{"name":"National Natural Science Foundation of China\n\t\t\t\t\t\t\t\t\t\t\t\t              https:\/\/ror.org\/01h0zpd94","award":["62561018"],"award-info":[{"award-number":["62561018"]}]},{"name":"Natural Science Foundation of Guangxi\n\t\t\t\t\t\t\t\t\t\t\t\t\t              https:\/\/ror.org\/01h0zpd94","award":["2025GXNSFBA069410"],"award-info":[{"award-number":["2025GXNSFBA069410"]}]},{"name":"Guangxi Science and Technology Base and Talent Special Project: Research and Application of Key Technologies for Precise Navigation","award":["Gui Ke AD25069103"],"award-info":[{"award-number":["Gui Ke AD25069103"]}]},{"name":"Nanning Scientific Research and Technology Development Project","award":["20231029"],"award-info":[{"award-number":["20231029"]}]},{"name":"Basic Research Capabilities Enhancement Project for Young and Middle-aged Teachers in Guangxi\u2019s Universities","award":["2025KY0243"],"award-info":[{"award-number":["2025KY0243"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Original high-definition radar data contains rich environmental information, including distance, Doppler velocity, and azimuth. However, extracting robust features from such sparse and noisy frequency-domain data remains a challenge. To address this issue, this paper proposes an improved multi-task network, the Efficient Feature Aggregation with Balanced Attention Radar Network (EFA-RadNet). This network introduces the VoVNetV2 architecture into the field of raw radar perception and effectively preserves feature diversity across different receptive fields through a One-Shot Aggregation (OSA) module, avoiding signal aliasing. In addition, we propose an attention mechanism module, Balanced effective Squeeze\u2013Excitation (B-eSE), which is better suited for sparse radar processing and effectively addresses the problem of weak target loss in the radar spectrum. Experiments on the RADIal dataset show that our EFA-RadNet achieves excellent target detection performance while also attaining optimal accuracy in free space segmentation.<\/jats:p>","DOI":"10.3390\/s26072050","type":"journal-article","created":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T15:05:33Z","timestamp":1774451133000},"page":"2050","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["EFA-RadNet: Efficient Feature Aggregation with Balanced Attention for Raw Radar Multi-Task Learning"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-4475-5060","authenticated-orcid":false,"given":"Chengliang","family":"Zhong","sequence":"first","affiliation":[{"name":"Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"Information and Communication School, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4771-9587","authenticated-orcid":false,"given":"Xiuping","family":"Li","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"Information and Communication School, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1908-4481","authenticated-orcid":false,"given":"Jingjing","family":"Li","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"Information and Communication School, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"National & Local Joint Engineering Research Center of Satellite Navigation Positioning and Location Service, Guilin 541004, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7605-9103","authenticated-orcid":false,"given":"Juan","family":"Liu","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"Information and Communication School, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4227-2499","authenticated-orcid":false,"given":"Xiyan","family":"Sun","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"Information and Communication School, Guilin University of Electronic Technology, Guilin 541004, China"},{"name":"National & Local Joint Engineering Research Center of Satellite Navigation Positioning and Location Service, Guilin 541004, China"},{"name":"GUET-Nanning E-Tech Research Institute Co., Ltd., Nanning 530031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Geiger, A., Lenz, P., and Urtasun, R. 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