Three-dimensional coherent radar imaging: experimental and model comparison of techniques
Abstract
We have implemented an eight-antenna module configuration at Jicamarca, to perform a three-dimensional imaging of the atmospheric brightness distribution, particularly at tropospheric (7 to 12 km) and E region heights (95-105 km). Four different methods have been implemented to solve for the inverse problem, i.e., to get the atmospheric brightness from visibility samples on the ground. We have used a Fourier-based, Capon and Maximum Entropy (MaxEnt) methods. In addition, we have implemented a fitting technique where a brightness distribution, characterized by a number of anisotropic Gaussian blobs, is assumed. It is important to note that with our current configuration we can characterize up to six anisotropic Gaussian blobs. These four methods are compared using experimental and model data. For the experimental part, we have taken advantage of the good knowledge that we have on the mean position, orientation and aspect sensitivity of the equatorial electrojet (EEJ).
Description
Resumen.
Date
2000
Keywords
Atmósfera , Luminosidad , Radar coherente , Sistemas de imágenes
Citation
Collections
Loading...
Publisher
Instituto Geofísico del Perú, Radio Observatorio de Jicamarca