© The Institution of Engineering and Technology
For a circular trace scanning synthetic aperture radar (CTSSAR) system, the conventional quadratic range approximation method becomes inefficient when the squint angle exists and the integrated aperture is long. To improve the accuracy in the approximation of the range history for CTSSAR, a modified hyperbolic range equation is introduced to derive the corresponding two-dimensional spectrum and further develop the imaging algorithm for CTSSAR. Promising results prove the effectiveness of the proposed method.
References
-
-
1)
-
2. Broquetas, A., De Porrata, R., Sagues, L., Fabregas, X., Jofre, L.: ‘Circular synthetic aperture radar (C-SAR) system for ground-based applications’, Electron. Lett., 1997, 33, (11), pp. 988–989 (doi: 10.1049/el:19970635).
-
2)
-
1. Liao, Y., Xing, M.D., Zhang, L., Bao, Z.: ‘A novel modified omega-K algorithm for circular trajectory scanning SAR imaging using series reversion’, EURASIP J. Adv. Signal Process., 2013, 64, (1), pp. 1–12.
-
3)
-
3. Bara, M., Sagues, L., Paniagua, F., Broquetas, A., Fabregas, X.: ‘High-speed focusing algorithm for circular synthetic aperture radar’, Electron. Lett., 2000, 36, (9), pp. 828–830 (doi: 10.1049/el:20000633).
-
4)
-
4. Garmatyuk, D., Narayanan, R.: ‘Ultra-wideband continuous-wave random noise Arc-SAR’, IEEE Trans. Geosci. Remote Sens., 2002, 40, (12), pp. 2543–2552 (doi: 10.1109/TGRS.2002.807009).
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2013.1901
Related content
content/journals/10.1049/el.2013.1901
pub_keyword,iet_inspecKeyword,pub_concept
6
6