Digital radiogoniometer for signal direction finding
Rohde Schwarz

Download the Flash plug-in

The R&S®DDF®195 Digital Direction Finder can be operated in accordance with two DF methods using digital signal processing: the tried and tested Watson-Wattmethod (HF band) and the advanced correlative interferometer method (VHF/ UHF band). In the latter case, the complex antenna voltages of the signal receivedare compared with stored reference values and then checked for maximum correlation. This DF method enables the implementation of wide-aperture DFantennas comprising only a few antenna elements and covering wide frequency ranges without division into subranges. The system allows direction finding of signals with any modulation.

Features

* Direction finding of signals with any modulation
* Wide-aperture behaviour above 300 MHz
* Very short signals of 10 ms detectable
* High accuracy and sensitivity
* Bandwidth setting independent of receiver
* AC supply or battery operation
* Simultaneous operation of all DF antennas (HF and VHF/UHF) without replacing antennas