OGO 4 - VLF Noise and Propagation


PI of the experiment or contact person Robert A. Helliwell
Institute of the PI or of the contact person (country) STAR-DEE-US        (USA)
E-mail of the PI or of the contact person rah@nova.stanford.edu
Type of experiment 6 VLF radio receivers that studied natural and
man-made VLF noise occurrences at orbital altitudes.
The receiver systems consisted of an inflatable 2.9-m loop antenna
References about the experiment (E73.1)
Link(s) to Web site(s) http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1967-073A&ex=2
Start experiment operation (dd-mm-yyyy) 28-07-1967
End experiment operation (dd-mm-yyyy) 01-11-1969
Lifetime of the experiment (month) 27
Highest data rate 64 kbps
Preliminary results Comparison of very-low-frequency auroral hiss with
precipitating low-energy electrons by the use of
simultaneous data from two OGO 4 experiments (R73.1)
Measured data (k, w, Bo, E(t), B(t), polarisation, Vphase, ...) Electric field and magnetic field components
Data range 0.2 - 100 kHz
Sensitivity ?????
Time resolution 0.288 s
Sampling rate ?????
Data formats and supports Analog Tapes and 35-mm paper rolls
Location of the data NSSDC and Sranford University
References about the data http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1967-073A&ex=2&ds=*
High-resolution data (support, place, contact) ?????