Incident Angle

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Joined: Wed Oct 19, 2016 10:19 pm

Incident Angle

Post by SIGINT » Tue Sep 15, 2020 4:24 pm

I have a little trouble relating "Incident Angle" in the KerberosSDR app on the Raspberry Pi - to real world bearings.

I have a setup with antenna 1 pointing North, 2, East, 3, South and 4 West

Should my Incident Angle display show correct compass bearing with signals coming from N showing 0/360 degrees ?


Posts: 94
Joined: Fri Sep 27, 2019 8:54 pm

Re: Incident Angle

Post by ckoval7 » Fri Sep 18, 2020 12:19 pm

The arrow on the compass points to the direction of the transmitter relative to antenna 1.

To get true bearing you add the direction of antenna 1 to the direction of the received signal. So if antenna 1 is pointing to 10 degrees and you're receiving a signal at 80 degrees, the transmitter is at 90.

If the sum of the angles is greater than 360 degrees, simply subtract 360 from the answer.

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