11/12/2022 0 Comments Thessa confluence rarTHESSA CONFLUENCE RAR SOFTWAREThis project was part of a cooperative effort with the Computational Electronics and Electromagnetics and Remote Imaging and Signal Engineering Thrust Areas, which contributed signal- and image-processing algorithm and software development and modeling support In addition, they developed pulse generators and antennas for evaluation and use in antenna configuration studies. They developed and implemented a laboratory test bed, including features to facilitate component testing antenna system configuration evaluation, and collection of experimental data from realistic test objects. Johansson, E.M.ĭuring FY-93, the authors continued with development and experimental evaluation of components and system concepts aimed at improving ground- penetrating imaging radar (GPIR) for nondestructive evaluation of bridge decks and other high-value concrete structures. International Nuclear Information System (INIS) The radar imaging depth is estimated to be between 2 and 3 m for active sand dune materials.Īdvanced ground- penetrating, imaging radar for bridge inspection THESSA CONFLUENCE RAR SKIN25 times the calculated skin depth, for the sediment blanket. The depth of signal penetration that results in a recorded backscatter, called radar imaging depth, was documented in the field to be a maximum of 1. The dominant factors related to efficient microwave signal penetration into the sediment blanket include 1) favorable distribution of particle sizes, 2) extremely low moisture content and 3) reduced geometric scattering at the SIR-A frequency (1. The near-surface stratigraphy, the electrical properties of materials, and the types of radar interfaces found to be responsible for different classes of SIR-A tonal response are summarized. It is found that the Shuttle Imaging Radar A (SIR-A) signal penetration and subsurface backscatter within the upper meter or so of the sediment blanket in the Eastern Sahara of southern Egypt and northern Sudan are enhanced both by radar sensor parameters and by the physical and chemical characteristics of eolian and alluvial materials. SHUTTLE IMAGING RADAR: PHYSICAL CONTROLS ON SIGNAL PENETRATION AND SUBSURFACE SCATTERING IN THE EASTERN SAHARA. (a) The UWB bandwidth of an imaging system operating. ground penetrating radars and wall imaging systems. 15.509 Section 15.509 Telecommunication FEDERAL COMMUNICATIONS. , fire fighting, emergency rescue, scientific research, commercial mining, or construction. 47 CFR 15.509 - Technical requirements for ground penetrating radars and wall imaging systems.
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