Range cell migration has a serious impact on the precision of image formation, especially for high-resolution and large-scale imaging. To get the full resolution and high quality of the image, the range cell migration correction in the azimuth time domain must be considered. For tackling this problem, this paper presents a novel and efficient range cell migration correction method based on curve fitting and signal processing. By emulating a curve to approximate the range-compressed echo of a strong point, the range location indexes of the strong point along the azimuth direction can be obtained under the least squares criterion. The merits of the proposed method are twofold: (1) the proposed method is robust to the uncertainty of system parameters (strong tolerance) under real flights and (2) the generalization of the proposed method is better and can be easily adapted to different synthetic aperture radar (SAR) modes (e.g., monostatic and bistatic). The experimental results on real remote sensing data from both the monostatic and the bistatic SAR demonstrate the effectiveness. The regressed distance curve is completely coincident with the trajectory of strong points of the echo. Finally, the imaging focus results also validate the efficiency of the proposed method.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2vFH7Y7
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
A study using a new computer-aided detection (CAD) algorithm found breast cancers... Read more on AuntMinnieEurope.com Related Reading: ...
-
Ahead of print: Prävalenz und Risikofaktoren der felinen Hyperthyreose in einer Klinikpopulation ...Ziel: Die feline Hyperthyreose ist eine häufige Endokrinopathie bei älteren Katzen. In früheren Studien wurden unausgewogene Ernährung, Schi...
-
Dicyclohexyl phthalate (DCHP) is one of the phthalate plasticizers. The objective of the present study was to investigate the effects of DCH...
-
Health Promotion in the Community: Impact of Faith-Based Lay Health Educators in Urban NeighborhoodsAbstract Promoting wellness and providing reliable health information in the community present serious challenges. Lay health educators, al...
-
Abstract To characterize the anatomical connectivity of the prelemniscal radiations (Raprl), a white matter region within the posterior sub...
-
Predictors of postoperative pneumonia in patients undergoing oral cancer resections and its management p. 69 Ridhi Sood, Jerry Paul, Sunil...
-
from Imaging via alkiviadis.1961 on Inoreader http://ift.tt/2Gb1m5b
-
This work presents the nonlinear dynamical analysis of a multilayer piezoelectric macrofiber composite (MFC) laminated shell. The effects of...
-
The upper reaches of the Heihe River have been regarded as a hotspot for phytoecology, climate change, water resources and hydrology studies...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου