Signal Monitoring and Analysis
Thursday, January 18, 2018
Yesterday I found the OTHR from Cyprus operating with 25 Hz pulse repetition rate and μ=500kHz/s sweep rate. The most likely geo-location is just north of the known location:
TDoA plots 17030 kHz 20180113T1126Z
Cross-correlations 173030 kHz 20180113T1126Z
I was thinking about an alternative way of geo-location using an extended Kalman filter, and found this reference:
. It is written very well and I was able to implement it quickly in octave using
from the optim toolbox for the Jacobian.
More on this later.
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