265
am
Project €,4 - Determination of Characteristics of Airborne Flush Mounted
Antennas and Photo Tubes for Yield Determination at Extended
Ground~to~Air Ranges - A. J. Waters
OBJECTIVES
To determine the effectiveness of flush mounted airberne antennas
and phototubes at various ground-to-alr ranges in detecting characteristi:
low frequency electromagnetic radiation and visible radiation, respectively.
To determine the temporal and amplitude characteristics of the low
frequency electromagnetic radiation at various ground-to-air ranges,
To determine the temporal and intensity characteristios of visible
2
radiation at various ground-to-air ranges,
To determine the effecta of ambient conditions upon the satisfactory
measuremert of the parameters specified in the first two items,
INSTRUMENTATION
2 fiducial antennas
2 scope cameras
1 synchronizer
1 sequence camera
2 photoheads
1 recorder
2 DuMont Scopes (1 a dual beam, 1 a sirgle beam)
TECHNIQUE
Signal is received by antenna fed through an amplifier and then to
the scope,
The signal is then photographed,
directly to the recorder,
Photchead output is led
The sequence oamera photographs the blast directly
for use in correlation of previous data.
Distance was approximately
434 miles,
SNL