Accession Number : AD0892153

Title :   Calibrated VLF Phase Measurements.

Descriptive Note : Technical note,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CA

Personal Author(s) : Swanson, E. R. ; Gimber, R. H. ; Britt, J. E.

Report Date : 04 DEC 1970

Pagination or Media Count : 33

Abstract : An investigation of spatial irregularity of VLF phase is discussed. It is shown that the phase is regular to the accuracy of the instrumentation, and that a grounded steel tower in close proximity to a whip antenna will not affect the phase measurement. However, antennas coupling to trees may cause an anomalous phase shift.

Descriptors :   (*PHASE MEASUREMENT, VERY LOW FREQUENCY), (*RADIO TRANSMISSION, PHASE MEASUREMENT), PHASE SHIFT CIRCUITS, RADIO WAVES, HYPERBOLIC NAVIGATION, RADIO RECEIVERS, RADIO RECEPTION, RADIO INTERFERENCE, STEEL, TOWERS, TERRAIN, TREES, ANTENNAS, CALIBRATION, TIME SIGNALS, ATOMIC CLOCKS, CESIUM, SYNCHRONIZATION(ELECTRONICS).

Subject Categories : Test Facilities, Equipment and Methods
      Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE