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NTIA Technical Memo ERLTM-ITS 220: Radio Navigation Coordinate Corrections for Excess Phase Accumulation Over Irregular, Inhomogeneous Terrain
July 2018, J. R. Johler; D. C. Hyovalti.
Radio navigation systems such as Loran C,D operate on ground waves over distances up to 3000 or 4000 km from the transmitters. If the ground is inhomogeneous and irregular, the wave propagation may be...
NTIA Technical Memo TM-18-534: Further Procedures for Laboratory Testing of Environmental Sensing Capability Sensor Devices
June 2018, Frank H. Sanders; Robert L. Sole; Geoffrey A. Sanders; John E. Carroll.
NTIA Technical Memorandum TM-18-527 describes procedures for testing the functionality of Environmental Sensing Capability (ESC) senso...