The effects of trapping and multipathing by atmospheric layers will be inconsequential because the angle of arrival of the energy, 0OS = 49.2°, is much larger than the critical angle for layer trapping. Atmospheric aerosols consist of diminutive particles roughly O.lp in diameter. At that size, the scattering impact is even less than that for the duststorm scattering. It can be seen that the amount of potential EM energy from all forms of scatter, including that from the rectenna itself (not yet calculated), added to the power from the sidelobes, presents a formidable problem for systems out to 100 km from the rectenna site. To assess the impact on systems near the Mojave site, an area 145 km by 145 km with the proposed rectenna site at the center, was chosen as our data sample area. All government and nongovernment EM systems operating within this geographic boundary between 75 MHz and 5 GHz were tabulated. The active files showed 813 government systems and 685 civilian authorizations operational within these boundaries (N 1500 allocations). For purposes of this initial environmental assessment, the equipment/ system categories identified in the file retrieval are as listed: 1. Military Development and Operational Test and Evaluation. a. Instrumentation radars - conical scan and monopulse modes. b. Traffic monitor/control radars. c. Radar transponders. d. Radar signal and functional replicators. e. Wideband monitor receivers with recognition/decision software scan instantaneous frequency modes. f. Television cameras for target position track. g. EM system operational monitors - multiple wideband receivers with processing software. h. Range command/control communications nets. i. Range telemetry communications networks. 2. Industrial Communications. a. Utility network command/control and telemetry. b. Pipeline network command/control and telemetry. c. Water resource telemetry. d. Multiplexed carrier networks - two major service systems. 3. Transportation Support Systems. a. Railroad mobile equipment - yards and enroute complex. b. Air traffic control network. c. Emergency services - mobile, base station, and relay equipment - medical and general emergency applications. d. Railroad ’’car condition” monitors.
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