We propose a method to detect a target in a bistatic passive polarimetric radar network, with weather surveillance radar as our illuminator of opportunity (IO). We build our signal model using electromagnetic vector sensors ...

In this paper, a bistatic passive radar receiver system named “Coherent‐scatter Atmospheric Passive Radar Imager (CAPRI)” is described. It is primarily designed to study the dynamics of the upper atmosphere by utilizing ...

Commercial FM broadcasts near 100 MHz provide powerful illumination of the ionosphere at a very useful wavelength. By performing synchronous observation of the transmitted signal and of scatter from the ionosphere, it is ...

There are not too many antennas in the VHF range in the world dedicated to radio astronomy. ST, and specially MST, radars require and have large antenna apertures which could also be used for radio astronomical observations. ...

The Middle Atmosphere Alomar Radar System (MAARSY) on the Norwegian island of Andøya is a 53.5 MHz monostatic radar with an active phased array antenna. The total array consists of 433 3- element linearly polarized Yagi ...

This paper focused on exploiting remotely sensed active and passive observations over agricultural fields for soil moisture retrieval purposes. Co-polarized backscattering coefficients HH and VV and V-polarized brightness ...

An increasing volume of publications has addressed the role of tectonics in inland areas of northern Brazil during the Neogene and Quaternary, despite its location in a passive margin. Hence, northern South America plate ...

Interferometric imaging (aperture synthesis imaging) is a technique used by radio astronomers to achieve angular resolution that far surpasses what is possible with a single large aperture. A similar technique has been ...