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Fault detection and diagnosis for superheterodyne receivers are therefore of critical importance, especially in noise environments. A general purpose fault detection and diagnosis scheme based on observers and residual error analysis was proposed in this study. In the scheme, two generalized regression neural networks (GRNNs) are utilized for fault detection, with one as an observer and the other as an adaptive threshold generator; faults are detected by comparing the residual error and the threshold. Then, time and frequency domain features are extracted from the residual error for diagnosis. A probabilistic neural network (PNN) acts as a classifier to realize the fault diagnosis. Finally, to mimic electromagnetic environments with noise interference, simulation model under different fault conditions with noise interferences is established to test the effectiveness and robustness of the proposed fault detection and diagnosis scheme. Results of the simulation experiments proved that the presented method is effective and robust in simulated electromagnetic environments.<\/jats:p>","DOI":"10.1155\/2018\/4763612","type":"journal-article","created":{"date-parts":[[2018,4,24]],"date-time":"2018-04-24T23:31:45Z","timestamp":1524612705000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A General Purpose Adaptive Fault Detection and Diagnosis Scheme for Information Systems with Superheterodyne Receivers"],"prefix":"10.1155","volume":"2018","author":[{"given":"Dengwei","family":"Song","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4278-3336","authenticated-orcid":false,"given":"Hongmei","family":"Liu","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8351-6103","authenticated-orcid":false,"given":"Le","family":"Qi","sequence":"additional","affiliation":[]},{"given":"Bo","family":"Zhou","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2018,4,24]]},"reference":[{"key":"e_1_2_8_1_2","first-page":"56","article-title":"Jamming technology study of superheterodyne receiver","volume":"10","author":"Qiang Y.","year":"2015","journal-title":"Fire Control & Command Control"},{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.aeue.2017.01.002"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/TAES.2011.6034640"},{"key":"e_1_2_8_4_2","first-page":"87","article-title":"Fault diagnosis method of radar receiver using multi-signal flow graphs model","volume":"38","author":"Chen S.-J.","year":"2009","journal-title":"Dianzi Keji Daxue Xuebao\/Journal of the University of Electronic Science and Technology of China"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1078\/1434-8411-54100231"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.5139\/JKSAS.2012.40.2.171"},{"key":"e_1_2_8_7_2","doi-asserted-by":"crossref","unstructured":"JayakumarM.andDasB. 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