Ground Penetrating Radar (GPR) and airborne thermography have been used for the location of buried spring barrier ponds and for the investigation of the shallow subsoil. Thermography has been selected for its ability to cover a wide area in a short time, the GPR has been chosen for the ability to distinguish, in great detail the presence of permeable layers composing the subsoil. Very positive ...

The development of Radar Polarimetry and Radar Interferometry is advancing rapidly, and these novel radar technologies are revamping “Synthetic Aperture Radar Imaging” decisively. In this exposition the successive advancements are sketched; beginning with the fundamental formulations and high-lighting the salient points of these diverse remote sensing techniques. Whereas with radar polarimetry ...

In this report we discuss the mechanisms of cognitive radar. This report is organized as follows: We start with the history of cognitive radar, where origins of the PAC, Fuster?s research on cognition and principals of cognition are provided. Fuster describes five cognitive functions: perception, memory, attention, language, and intelligence. We describe the Perception-Action Cyclec (PAC) as it...

1International Institute for Earthquake Prediction Theory and Mathematical Geophysics, Russian Ac. Sci., Warshavskoe sh., 79, korp. 2, Moscow, 113556, Russia 2Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California, 90095-1567, U.S.A. 3Department of Earth and Space Sciences, University of California, Los Angeles, California, 90095-1567, U.S.A. 4Earthquak...

Sahil Agarwal, ∗ Fabio Del Sordo, 3, 4 and John S. Wettlaufer 4, 5, 6 Program in Applied Mathematics, Yale University, New Haven, USA Departments of Geology & Geophysics, Yale University, New Haven, USA Department of Astronomy, Yale University, New Haven, USA Nordita, Royal Institute of Technology and Stockholm University, SE-10691 Stockholm, Sweden Departments of Geology & Geophysics, Mathemat...

There are many proposals for multi-channel radar, emanating from the conventional monostatic radar system where transmitter and receiver are collocated. Collocation makes it easy for transmitter and receiver to share a common stable clock (local oscillator), which is required for both range and Doppler measurements. Signal processing for multi-static radars (see [1]) with widely dispersed anten...

S U M M A R Y The geographical distribution of the (1981–2005) seismicity in southern California forms a ±150 km broad zone adjacent to the Pacific–North America plate boundary, ranging from depths of ∼1–∼30 km, with the bulk of the focal depths in the range of 2–12 km. The distribution of the seismicity that includes both mainshock–aftershock sequences and background events is affected by both...

abstract obtaining reliable precipitation observations is important for hydrological simulations and weather forecasting. radar data can provide insight in the spatial variation of precipitation and can also detect large areas of rain and estimate rainfall rates. weather radar systems nearly always operate in s-, c- or x-band. since x-band systems require smaller antennas than those at c- or s-...

Against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive Kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (INS/Radar). This filter involves the concept of residual-based adaptive estimation and adaptive fading Kalman filter and tunes dynamically the fil...

Granulometries and pattern spectra are morphological tools used to obtain size distributions in images. This paper presents the application of these techniques to radar signals. It uses a new approach which is more appropriate for RF signals than the classical approach. It uses complex openings, closings and power measurements instead of the usual graytone operators and the Lebesgue measure. Ex...