The document describes a multi-mission radio direction finding receiver that is lightweight and portable. It has the ability to determine the direction of arrival of HF, VHF, and UHF radio signals. The receiver includes a full-functional HF/VHF/UHF scanning receiver with built-in direction finding capability. It also has an antenna signal processor that works with removable antenna elements to function as a direction finding antenna array. The system provides 1 degree resolution and 360 degree coverage to locate radio signals on a digital map using the receiver's GPS position.

1. Multi-mission Radio Direction Finding Receiver
Goals of the project:
Development of a lightweight, man portable, radio direction finder
equipment (RDF) which is able to determine the direction of arrival
(DOA) of communication radio signals in HF/VHF/UHF band.
Basic components:
Full-functional HF/VHF/UHF scanning and monitoring receiver
Built-in bearing processor Direction-Finding (DF) capability
Antenna signal processor with removable antenna elements for full
functional direction finding antenna array
Basic technical parameters:
HF/VHF/UHF scanning/monitoring receiver with built-in bearing processor
built-
1.5-3000MHz frequency coverage receiver
CW/LSB/USB/AM/FM demodulators with different bandwidth
Frequency and memory scan functionality
Built-in bearing processor with 360° coverage and 1° resolution
Different antenna systems for different missions
Antenna signal processor with 8 self-supporting antenna input
self-
VHF DF antenna for 100-450MHz
100-
UHF DF antenna for 350-1200MHz
350-
Operation examples: man portable, mobile, fix site, semi mobile
examples:
Remote control and map-ware based visualization
mapVisualization of the
measured bearings
on the digital map is
based on the GPS
measured positions
of the DF receivers
MapPoint and MapInfo
are supported for mapmapware based mission
design and evaluation
Remote control software for up to 4 DF receiver
www.sagax.hu
Example measurement results on digital map
Rev. 080210
Sagax, Ltd.
Sagax, Ltd.
Haller u. 11-13.
111096 Budapest, HUNGARY