MANUAL FOR ARN-3 TYPE ATMOSPHERIC NOISE MEASURING EQUIPMENT
STANFORD RESEARCH INST MENLO PARK CA
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Equipment has been developed and constructed for use in studies of atmospheric noise in Thailand. Average noise power and the mean envelope voltage can be measured at eight frequencies in the VLF, LF, MF, and HF bands. The design of this equipment is derived from the National Bureau of Standards now ESSA ARN-2 noise-measuring equipment. The equipment is operated in conjunction with the standard ARN monopole and ground plane and so the data obtained are compatible with data from the existing worldwide network of noise stations coordinated by ESSA, Boulder, Colorado. Impulsive voltages induced in the standard antenna by local thunderstorms are recorded at several threshold levels by lightning-flash analyzer equipment to supplement the ARN type data. This report is intended as an operation and maintenance manual. It explains the principles of operation and includes schematic diagrams and sample records as well as a description of calibration and data-reduction procedures.
- Atmospheric Physics
- Test Facilities, Equipment and Methods