Determining subsurface properties through ground penetrating radar sounding can be challenging, especially in planetary exploration, where little is known about the terrain and additional observations are limited. Analysis interpretation of data acquired with Radar Imager for Mars’ Subsurface Experiment (RIMFAX) could therefore improved by in-detail comparison forward modeling. RIMFAX transmits...

A new solid state Frequency Modulated Continuous Wave (FMCW) cloud radar operating at 94GHz has been developed in the UK by the STFC Rutherford Appleton Laboratory, for the UK Met Office. This vertical-profiling cloud radar incorporates technological and operational advances over a previous demonstration instrument, which operated at 78GHz. In addition to providing independent high spatial (ord...

The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the State of California. This report does not constitute a standard, specification, or regulation. CALIFORNIA PATH PROGRAM INSTITUTE OF TRANSPORTATION STUDIES UNIVERSITY OF CALIFORN...

Large variations in both snow water equivalent (SWE) and snow slope stability are known to exist in the alpine snowpack, caused by wind, topographic and microclimatic effects. This variability makes extrapolation of point measurements of snowpack properties difficult and prone to error, but these types of measurements are used to estimate SWE and stability across entire mountain ranges. Radar t...

In this paper we present coplanar MMICs based on both, metamorphic (MHEMT) and pseudomorphic (PHEMT) high electron mobility transistor technologies. Starting with a modulator-driver MMIC for optical transmission systems, we describe state of the art MMICs like a 94 GHz low-noise amplifier, a 35 GHz and a 60 GHz medium power amplifier and finally we demonstrate the feasibility of a monolithicall...

This study proposes a 24 GHz FMCW radar system to detect the 3-dimensional location of target. To determine azimuth and elevation angles target, proposed includes seven transmitters, illuminating between −17.5° 17.5° with 5° resolution, receiver 2×4 array. Instead using conventional switch, beam steering is performed by directly switching power amplifier transmitter. Experimental results show t...

Direct digital synthesizers provide broadband and flexible signal generation. Hence, they are well suited for radar applications. In this paper, we consider the EUVIS DS872 device that has a bandwidth of 3GHz and an internal memory. The goal of this work is to evaluate its usability in frequency modulated continuous wave (FMCW) radar systems. An experimental test environment has been created, w...

Using ESM, RWR and ARM missiles pose significant limitations to the performance of the radar systems in new battles. In these wars, MTI radars are commonly used with high Power to achieve long ranges, therefore they are easily detectable by the enemy EW receivers, and so they lose their effectiveness. In addition to having the ability of anti-Jamming and good ECCM, the radar systems should to u...