On Synthetic Aperture Radar Spatial Azimuth and Range Resolution Equations
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Viet Thuy Vu, Thomas Sjögren, Mats Pettersson |
| Title: | On Synthetic Aperture Radar Spatial Azimuth and Range Resolution Equations |
| Journal: | IEEE transactions on aerospace and electronic systems |
| Year: | 2012 |
| Volume: | 48 |
| Issue: | 2 |
| Pagination: | 1764 - 1769 |
| ISSN: | 0018-9251 |
| Publisher: | IEEE |
| URI/DOI: | 10.1109/TAES.2012.6178096 |
| ISI number: | 000302647400058 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik) School of Engineering S-371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/ing/ |
| Authors e-mail: | viet.thuy.vu@bth.se |
| Language: | English |
| Abstract: | This paper discusses spatial resolutions for narrowband narrowbeam (NB) synthetic aperture radar (SAR) as well as for ultrawideband ultrawidebeam (UWB) SAR. The similarity and difference between the impulse response function in NB SAR imaging (IRF-NSAR) - sinc function - and the impulse response function in UWB SAR imaging (IRF-USAR) is investigated and the result of this investigation shows that in the intensity interval from −6 dB to 0 dB, the behavior of IRF-NSAR and IRF-USAR in azimuth and range are similar. This is the basis for a derivation of new spatial resolution equations for UWB SAR based on −3 dB width or half power beamwidth (HPBW). The investigated result also shows that there exists the so-called HPBW narrowing/broadening factor in an IRF-USAR. |
| Subject: | Signal Processing\Radar and Sonar Signal processing\Image and Video Processing Mathematics\Discrete Mathematics |
| Keywords: | Synthetic aperture radar (SAR), resolution, impulse response function in SAR imaging (IRF-SAR), ultrawideband ultrawidebeam (UWB), narrowband narrowbeam (NB) |
