Search found 4 matches

by jsalsburg
Thu May 16, 2019 6:14 am
Forum: KerberosSDR
Topic: semi-passive radar
Replies: 12
Views: 2119

Re: semi-passive radar

About detecting traffic. The only reason to use Direction Finding/Passive RADAR for traffic activity is to determine 1. direction. 2. Range and 3.Velocity which can produce imaging of the traffic. Simple low cost RADAR modules are available online for less than $100 that will detect large truck's ve...
by jsalsburg
Thu May 16, 2019 5:44 am
Forum: KerberosSDR
Topic: semi-passive radar
Replies: 12
Views: 2119

Re: semi-passive radar

About Ground Penetrating RADAR. Requires a high voltage (Deadly 1000 Volts) 400 MHz Pulsed Transmitter driving a bow-tie antenna inside a large box facing the ground on wheels. Using an array of receiving antennas connected to the KerberosSDR is possible but would be large and cumbersome, the size o...
by jsalsburg
Wed May 15, 2019 11:06 pm
Forum: KerberosSDR
Topic: Clock oscillator on KerberosSDR?
Replies: 5
Views: 1392

Re: Clock oscillator on KerberosSDR?

Synchronizing clocks for SDRs is a well established technology, first used to sync data streams for Radio and RADAR Astronomy in the late 1970s. To forgo the boring details of how this is done with SDRs, I will say that it is a technique using a sudo-phased-locked-loop. The SDR's clock frequency var...
by jsalsburg
Wed May 15, 2019 10:39 pm
Forum: RTL-SDR Discussion
Topic: Graves Meteor detection
Replies: 4
Views: 5022

Re: Graves Meteor detection

Using the GRAVES Space RADAR for Meteor detection, you need to point your antenna above the horizon. Computing the angle is the chore you face; more than 2 degrees and less than 30 degrees is ideal, depending on you relative location to the Transmission. Subscribe to radiometeoren <ls.vvs.beforum> f...