The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW radar. Also described here is the algorithm used in calculating the phase error and application of the phase correction with triangle modulation. Known errors were calculated at certain distances and applied to correcting the phase of data taken at similar distances. The results given were generated using a SAR working outside linear ranges.
","abstract_html":"<p>The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW radar. Also described here is the algorithm used in calculating the phase error and application of the phase correction with triangle modulation. Known errors were calculated at certain distances and applied to correcting the phase of data taken at similar distances. The results given were generated using a SAR working outside linear ranges.</p>","abstract_has_math":false,"creators":["Testin, Nicholas J","Davis, Philip"],"institution":null,"degree_name":null,"degree_level":"Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Kami Anderson, Ph.D.","Theodore Grosch, Ph.D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-05-02T07:00:00Z","date_published":"2017-05-02T07:00:00Z","updated_at":"2026-07-24T02:43:17Z","subjects":["Autofocus","FMCW","Radar","Radar imaging","Radar signal processing","Synthetic aperture radar","Electromagnetics and Photonics","Other Electrical and Computer Engineering","Signal Processing","VLSI and Circuits, Embedded and Hardware Systems"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.kennesaw.edu/honors_etd/10","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kami Anderson, Ph.D.","Theodore Grosch, Ph.D."]},{"key":"dc:creator","label":"Author","values":["Testin, Nicholas J","Davis, Philip"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Autofocus","FMCW","Radar","Radar imaging","Radar signal processing","Synthetic aperture radar","Electromagnetics and Photonics","Other Electrical and Computer Engineering","Signal Processing","VLSI and Circuits, Embedded and Hardware Systems"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.kennesaw.edu/honors_etd/10"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW radar. Also described here is the algorithm used in calculating the phase error and application of the phase correction with triangle modulation. Known errors were calculated at certain distances and applied to correcting the phase of data taken at similar distances. The results given were generated using a SAR working outside linear ranges.
"]},{"key":"dc:title","label":"Title","values":["Implementation of Range Autofocus for SAR Radar Imaging"]}]}],"canonical_facts":{"dc:contributor":["Kami Anderson, Ph.D.","Theodore Grosch, Ph.D."],"dc:creator":["Testin, Nicholas J","Davis, Philip"],"dc:description.abstract":["The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW radar. Also described here is the algorithm used in calculating the phase error and application of the phase correction with triangle modulation. Known errors were calculated at certain distances and applied to correcting the phase of data taken at similar distances. The results given were generated using a SAR working outside linear ranges.
"],"dc:identifier":["https://digitalcommons.kennesaw.edu/honors_etd/10"],"dc:subject":["Autofocus","FMCW","Radar","Radar imaging","Radar signal processing","Synthetic aperture radar","Electromagnetics and Photonics","Other Electrical and Computer Engineering","Signal Processing","VLSI and Circuits, Embedded and Hardware Systems"],"dc:title":["Implementation of Range Autofocus for SAR Radar Imaging"],"thesis:degree_level":["Thesis"]},"updated_at":"2026-07-24T02:43:17Z"}