This system was evaluated when the installation was completed. It was in a government department which was basically the equivalent of the FCC.
The system information is readily available on the R&S web page. The system that I had used, used crossed loops. The system also can used with an array of active verticals in an Adcock array. The Adcock array was not as good as the crossed loops for high angle signals. There are a number of super resolution direction finding systems on the market. Most super resolution direction finder systems use active vertical for low angle signals and some form of loop system for high angle signals. Most users install both options. The music algorithm steers nulls of the array, it does not use beamforming for direction finding. Its complex subject matter that cannot be summarized in a forum like this.
I have direct experience using the R&S crossed loop antennas. If this kind of system was used on the ham bands there would be very few jammers left on the ham bands. Azimuth accuracy is less than 1 degree. However using the single sight location software you can nail a station within a few hundred meters or less. It was interesting monitoring the various ham bands and comparing the callsign register with the DF location as provided. Basically you could quickly find the hams whose registered addresses were wrong or out of date. Thats how accurate the system is. With single sight location you need to to use a ionospheric sounder for best results. This is why I suggest that the Anan should have an ionospheric sounder mode. For hams single site location DF system would be the best system to use especially when used with ionosonder/radisonder data. Super resolution DF is only possible using coherent direct sampling receivers.http://www.rohde-schwarz.com/en/product/ddf0xe-productstartpage_63493-9482.htmlhttp://www.rohde-schwarz.com/en/product/add011sr-productstartpage_63493-10869.html
Another advantage of super resolution is that it can identify and locate emitters from different locations transmitting at the same time. All the data is processed at once and fixes given for all emitters. Super resolution DF antenna systems can be scaled for any ham location. Over the years I have seen demonstrated super resolution DF systems using only 3 loop antennas.
"I used a R&S DF system for monitoring the 80, 40 and 20 meters and the results were really scary especially when using radiosonde data."
Zenki, can you provide more info about that. What sort of equipment and antenna(s) were involved? Where did you do this? What sort of accuracy was provided?