Abdul Gaffar, MYNel, Willem AJInggs, MR2008-11-182008-11-182008-10Abdul Gaffar, MY, Nel, WAJ and Inggs, MR. 2008. Quaternion-based transformation for extraction of image-generating Doppler for ISAR, IEEE Geoscience and Remote Sensing Letters, Vol. 5(4), pp 560-5631545-598Xhttp://hdl.handle.net/10204/2587Copyright: 2008 Institute of Electrical and Electronic Engineers (IEEE)Inverse synthetic aperture radar (ISAR) is an imaging technique that is dependent on an object’s rotational motion over a coherent processing interval. Maritime vessels and aircraft possess 3-D rotational motion, whereas it is only their ISAR contributing motion that is useful to the ISAR imaging process; the contributing motion consists of the Doppler generating axis and the effective angle of rotation. This letter presents a quaternion-based transformation that converts measured attitude and position data into an object’s Doppler generating axis and effective angular rotation rate. This transformation is significant since it isolates the component of the motion that directly influences the ISAR image. It provides an alternative approach that can be used to understand the causes of blurring of most ISAR images of sea vessels as well to identify good imaging intervals for applications such as cooperative ISAR for radar cross section measurement purposesenCooperative inverse synthetic aperture radarISARInverse synthetic aperture radarDoppler generating axis of rotationEffective angular rotation rateArticleAbdul Gaffar, M., Nel, W., & Inggs, M. (2008). Quaternion-based transformation for extraction of image-generating Doppler for ISAR. http://hdl.handle.net/10204/2587Abdul Gaffar, MY, WAJ Nel, and MR Inggs "Quaternion-based transformation for extraction of image-generating Doppler for ISAR." (2008) http://hdl.handle.net/10204/2587Abdul Gaffar M, Nel W, Inggs M. Quaternion-based transformation for extraction of image-generating Doppler for ISAR. 2008; http://hdl.handle.net/10204/2587.TY - Article AU - Abdul Gaffar, MY AU - Nel, WAJ AU - Inggs, MR AB - Inverse synthetic aperture radar (ISAR) is an imaging technique that is dependent on an object’s rotational motion over a coherent processing interval. Maritime vessels and aircraft possess 3-D rotational motion, whereas it is only their ISAR contributing motion that is useful to the ISAR imaging process; the contributing motion consists of the Doppler generating axis and the effective angle of rotation. This letter presents a quaternion-based transformation that converts measured attitude and position data into an object’s Doppler generating axis and effective angular rotation rate. This transformation is significant since it isolates the component of the motion that directly influences the ISAR image. It provides an alternative approach that can be used to understand the causes of blurring of most ISAR images of sea vessels as well to identify good imaging intervals for applications such as cooperative ISAR for radar cross section measurement purposes DA - 2008-10 DB - ResearchSpace DP - CSIR KW - Cooperative inverse synthetic aperture radar KW - ISAR KW - Inverse synthetic aperture radar KW - Doppler generating axis of rotation KW - Effective angular rotation rate LK - https://researchspace.csir.co.za PY - 2008 SM - 1545-598X T1 - Quaternion-based transformation for extraction of image-generating Doppler for ISAR TI - Quaternion-based transformation for extraction of image-generating Doppler for ISAR UR - http://hdl.handle.net/10204/2587 ER -