cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Community Champion

Radio Direction Finding

An interesting and fascinating subject, to those have inquiring minds:  Historical context in terms of Radio Direction Finding or RDF, which originally was called Huff Duff during World War I and II, but still actively being used on the Higher Frequency bands.  With the ability to now programme in noise and search capabilities we now have the capability to use Time Distance of Arrival (TDOA) with three or more passive receivers with GPS built in.   KiwiSDR is a good example and you can try it yourselves at www.sdr.hu

 

If anyone is bored over the festive season, I would recommend experimenting and trying it out.

 

Regards

 

Caute_Cautim

 

 

 

5 Replies
Viewer

Re: Radio Direction Finding

 

Thank you. An interesting topic to study. 

 

Regards,

Johnson

Community Champion

Re: Radio Direction Finding

Gatwick Airport could have used the same techniques to find the source of the Drone controller too, had they applied the appropriate techniques.

 

Regards

 

Caute_cautim

Tags (2)
Community Champion

Re: Radio Direction Finding

This is not a subject for answering, it is merely an interesting aspect of radio communications, with fascinating  historical aspects, which only now have recently made it possible to carry out Time Distance of Arrival calculations accurately to ensure that reports can be passed on to authorities under the International Telecommunications Union, who globally support the frequency allocations for all nations around the world and as part of this - there is an international Intruder Monitoring group, who have had major difficulties from the past 90-100 years providing radio direction finding to a reasonable accuracy over long distances.

 

Although the next subject will how to detect rogue Internet of Things (IoT) and IIoT) devices, accurately enough, so that adequate screening can be put in place or security controls to minimise the impact of such devices on organisations.  But not a lot of organisations, have even considered - perhaps they are still caught in monitoring drones around airports and how to detect the source i.e. the operator?

 

Regards

 

Caute_cautim

 

Tags (2)
Newcomer III

Re: Radio Direction Finding

At the Security Congress, one of the principals of Secure802 gave a session on IoT devices, and some background/stories on radio as well.  If anyone is in the hunt for RF engineers to augment security staffs for this kind of work in the US, Verizon Wireless just let a lot of folks go, and I'm sure there is some top talent on the street right now. (I used to work there as well)  Interference source hunting has been part of their bread and butter for years in the Performance space, especially clearing spectrum for the LTE launch several years ago.  These skills would easily transfer to rogue device, remote controller, etc. detection and locating.

Community Champion

Re: Radio Direction Finding

It will become a major issue in 2019 from previous predictions. I just hope we have similarly skilled people who can cope with it - rather like technical countermeasures.