{"id":{"repo_id":"ku","oai_identifier":"oai:kuscholarworks.ku.edu:1808/35030"},"canonical_url":"https://search.dev.ndltd.org/etd/ku/oai:kuscholarworks.ku.edu:1808/35030","repository":{"repo_id":"ku","name":"University of Kansas","base_url":"https://kuscholarworks.ku.edu/server/oai/request"},"display":{"title":"Spectral Cohabitation and Interference Mitigation via Physical Radar Emissions","abstract":"Auctioning of frequency bands to support growing demand for high bandwidth 5G communications is driving research into spectral cohabitation strategies for next generation radar systems. The loss of radio frequency (RF) spectrum once designated for radar operation is forcing radar systems to either learn how to coexist in these frequency spectrum bands, without causing mutual interference, or move to other bands of the spectrum, the latter being the more undesirable choice. Two methods of spectral cohabitation are proposed and presented in this work, each taking advantage of recent developments in random frequency modulation (RFM) waveforms, which have the advantage of never repeating. RFM waveforms are optimized to have favorable radar waveform properties while also readily incorporating agile spectral notches. The first method of spectral cohabitation uses these spectral notches to avoid narrow-band RF interference (RFI) in the form of other spectrum users residing in the same band as the radar system, allowing both to operate while minimizing mutual interference. The second method of spectral cohabitation uses an optimization procedure to embed a communications signal into a dual-purpose radar/communications emission, thus allowing one waveform to serve both functions simultaneously. Both of these methods are presented and described in detail as well as being validated through simulation and physical open-air experimentation.","abstract_html":"Auctioning of frequency bands to support growing demand for high bandwidth 5G communications is driving research into spectral cohabitation strategies for next generation radar systems. The loss of radio frequency (RF) spectrum once designated for radar operation is forcing radar systems to either learn how to coexist in these frequency spectrum bands, without causing mutual interference, or move to other bands of the spectrum, the latter being the more undesirable choice. Two methods of spectral cohabitation are proposed and presented in this work, each taking advantage of recent developments in random frequency modulation (RFM) waveforms, which have the advantage of never repeating. RFM waveforms are optimized to have favorable radar waveform properties while also readily incorporating agile spectral notches. The first method of spectral cohabitation uses these spectral notches to avoid narrow-band RF interference (RFI) in the form of other spectrum users residing in the same band as the radar system, allowing both to operate while minimizing mutual interference. The second method of spectral cohabitation uses an optimization procedure to embed a communications signal into a dual-purpose radar/communications emission, thus allowing one waveform to serve both functions simultaneously. Both of these methods are presented and described in detail as well as being validated through simulation and physical open-air experimentation.","abstract_has_math":false,"creators":["Ravenscroft, Gerald Brandon"],"institution":"University of Kansas","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Blunt, Shannon D"],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-05-31","date_published":"2023-05-31","updated_at":"2026-07-24T02:45:54Z","subjects":["Electrical engineering","Dual-function Radar & Communications","FM Noise Waveforms","Spectrum Sharing"],"languages":["en"],"rights":["Copyright held by the author."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["http://dissertations.umi.com/ku:18946"],"render_values":[{"text":"http://dissertations.umi.com/ku:18946","href":"http://dissertations.umi.com/ku:18946","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/1808/35030","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Blunt, Shannon D"]},{"key":"dc:creator","label":"Author","values":["Ravenscroft, Gerald Brandon"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2024-04-30T14:09:58Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2024-04-30T14:09:58Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-05-31"]},{"key":"dc:publisher","label":"Institution","values":["University of Kansas"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Electrical engineering","Dual-function Radar & Communications","FM Noise Waveforms","Spectrum Sharing"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright held by the author."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["http://dissertations.umi.com/ku:18946"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1808/35030"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Auctioning of frequency bands to support growing demand for high bandwidth 5G communications is driving research into spectral cohabitation strategies for next generation radar systems. The loss of radio frequency (RF) spectrum once designated for radar operation is forcing radar systems to either learn how to coexist in these frequency spectrum bands, without causing mutual interference, or move to other bands of the spectrum, the latter being the more undesirable choice. Two methods of spectral cohabitation are proposed and presented in this work, each taking advantage of recent developments in random frequency modulation (RFM) waveforms, which have the advantage of never repeating. RFM waveforms are optimized to have favorable radar waveform properties while also readily incorporating agile spectral notches. The first method of spectral cohabitation uses these spectral notches to avoid narrow-band RF interference (RFI) in the form of other spectrum users residing in the same band as the radar system, allowing both to operate while minimizing mutual interference. The second method of spectral cohabitation uses an optimization procedure to embed a communications signal into a dual-purpose radar/communications emission, thus allowing one waveform to serve both functions simultaneously. Both of these methods are presented and described in detail as well as being validated through simulation and physical open-air experimentation."]},{"key":"dc:title","label":"Title","values":["Spectral Cohabitation and Interference Mitigation via Physical Radar Emissions"]}]}],"canonical_facts":{"dc:contributor.advisor":["Blunt, Shannon D"],"dc:creator":["Ravenscroft, Gerald Brandon"],"dc:date.accessioned":["2024-04-30T14:09:58Z"],"dc:date.available":["2024-04-30T14:09:58Z"],"dc:date.issued":["2023-05-31"],"dc:description.abstract":["Auctioning of frequency bands to support growing demand for high bandwidth 5G communications is driving research into spectral cohabitation strategies for next generation radar systems. The loss of radio frequency (RF) spectrum once designated for radar operation is forcing radar systems to either learn how to coexist in these frequency spectrum bands, without causing mutual interference, or move to other bands of the spectrum, the latter being the more undesirable choice. Two methods of spectral cohabitation are proposed and presented in this work, each taking advantage of recent developments in random frequency modulation (RFM) waveforms, which have the advantage of never repeating. RFM waveforms are optimized to have favorable radar waveform properties while also readily incorporating agile spectral notches. The first method of spectral cohabitation uses these spectral notches to avoid narrow-band RF interference (RFI) in the form of other spectrum users residing in the same band as the radar system, allowing both to operate while minimizing mutual interference. The second method of spectral cohabitation uses an optimization procedure to embed a communications signal into a dual-purpose radar/communications emission, thus allowing one waveform to serve both functions simultaneously. Both of these methods are presented and described in detail as well as being validated through simulation and physical open-air experimentation."],"dc:identifier.other":["http://dissertations.umi.com/ku:18946"],"dc:identifier.uri":["https://hdl.handle.net/1808/35030"],"dc:language.iso":["en"],"dc:publisher":["University of Kansas"],"dc:rights":["Copyright held by the author."],"dc:subject":["Electrical engineering","Dual-function Radar & Communications","FM Noise Waveforms","Spectrum Sharing"],"dc:title":["Spectral Cohabitation and Interference Mitigation via Physical Radar Emissions"],"dc:type":["Dissertation"]},"updated_at":"2026-07-24T02:45:54Z"}