A continuous PRI variation method for geosynchronous SAR with elliptical orbit

Wei Yin, Zegang Ding, Shuangjing Yang, Yan Li, Tao Zeng, Teng Long

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Elliptical orbits are widely used in the system design of geosynchronous synthetics aperture radar (GEO SAR) to improve the temporal resolution. The orbit height variation in the elliptical orbit can cause the variation of nadir interference and beam illumination region. This shortens the available time of a designed pulse repetition interval (PRI) for a specific beam pointing, and multiple PRIs have to be used at different orbital positions. To lengthen the available time, a continuous PRI variation method is introduced in this paper. By varying the PRI with a constant time interval, the acquisition window and transmit interference changes with the variant beam illumination region, which loosen the constraint of the transmit interference. A design example of the proposed method is provided with significantly lengthened available time.

Original languageEnglish
Title of host publication2015 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4582-4585
Number of pages4
ISBN (Electronic)9781479979295
DOIs
Publication statusPublished - 10 Nov 2015
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Milan, Italy
Duration: 26 Jul 201531 Jul 2015

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2015-November

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015
Country/TerritoryItaly
CityMilan
Period26/07/1531/07/15

Keywords

  • Geosynchronous SAR
  • PRI design
  • PRI variation
  • orbit height variation

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