Arcata: Radar technician documents unidentified targets
Kenneth Ehlers at the Landing Aids Experiment Station detected mysterious radar targets moving at 30 mph along the California coast that could not be explained by conventional phenomena. Kenneth Arnold visited to investigate these anomalous readings.
Background
Radar Detection
Kenneth W. Ehlers, a radar technician at the Landing Aids Experiment Station in Arcata, California, accumulated data on unidentified radar targets he termed "gizmos." These objects appeared on radar screens but remained invisible to the naked eye.
Flight Characteristics
The targets consistently traveled at approximately 30 mph along a northwest-to-southeast trajectory parallel to the coast. They exhibited unusual behavior: occasionally halting completely, splitting into multiple objects, or merging back together. The radar signatures indicated small solid targets.
Investigation and Analysis
Kenneth Arnold visited the facility in spring 1948 to interview Ehlers about these phenomena. Ehlers had been reporting his findings to Navy meteorologist Florence Van Straten and Luis Walter Alvarez, inventor of the Ground Control Approach System radar. While some attributed the targets to insects, Ehlers remained skeptical. He later theorized they might be plasma formations at atmospheric inversion layers, though this hypothesis failed to account for their controlled movements.
Connections
References
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