Whether you need long-term frequency monitoring of critical radio services, temporary monitoring of special events, direction finding and localization of interferers or evidence of illegal spectrum use – we offer flexible solutions for long-term monitoring, direction finding and antenna measurements.
Our automated spectrum monitoring, direction finding and geolocation system LS OBSERVER offers a comprehensive portfolio of remote monitoring units (RMUs) which are controlled by the powerful central monitoring software (CMS). The RMUs are available as fixed, portable, mobile, or flying units.
LS OBSERVER takes over the 24/7 permanent monitoring for you. It monitors your entire frequency range of interest and automatically alarms you in case of anomalies. Parallel to this everything is continuously recorded and can be analyzed in detail later. Of course you can still perform monitoring live and control the units manually.
The LS OBSERVER CMS software stands for its user-friendliness and easy handling. The operation of the software is intuitive: The amount of buttons and input fields are reduced to a minimum, the views and menus are clearly arranged.
Each LS OBSERVER remote monitoring unit (RMU) includes its own large embedded storage space. The complete spectrum of interest or a part of it can be permanently recorded to the internal storage without having to transfer data to a remote server.
By this the RMU can be also operated stand-alone or in a network with unstable connection. The stored data can simply be downloaded from the unit remotely or by plugging in a laptop. With the LS OBSERVER CMS the user has multiple possibilities to filter the recorded data sets in order to download exactly the data he needs for his analysis.
Analysis on stored data
With LS OBSERVER every measurement and analysis which can be done live can also be done based on stored data. With the unique DF Time Travel® and PDoA feature even direction finding and emitter geolocation becomes possible on stored data. Was there interference during the night and where did it came from? You will never know with traditional monitoring systems, if you do not have a high number of employees available who take care of the monitoring 24/7. With LS OBSERVER you can simply analyze the recorded measurement the next morning in the office and locate the interfering signal source subsequently.
Transmitter database integration
To detect unknown emitters, interference or faulty transmitters it is essential that the monitoring system knows about the nominal condition of the wireless environment. This means the system knows all authorized transmitters i.e. their location, frequency, power and bandwidth. For a national regulatory authority this can be all transmitters from the spectrum management database, for an airport or industrial company all radio infrastructure on the corresponding premises and for the military all radio channels used by their own forces. Such a database of known or licensed transmitters can be connected to the LS OBSERVER CMS software or a transmitter list can be imported. The automatic violation (AVD) feature then permanently compares the measured spectrum with the theoretical spectrum and triggers an alarm in case of anomalies.
LS OBSERVER offers a wide range of unique features. With the automatic violation detection (AVD), the measured spectrum is permanently compared with a transmitter database. Based on the distance to the transmitter the monitoring unit receives the signal with a different level. To set up a mask for each known transmitter individually for each monitoring unit means an enormous effort. With LS OBSERVER the included wave propagation feature calculates for each monitoring unit in the filed the individual expected receive levels at the location of the unit automatically. The wave propagation module is also used for PDoA geolocation calculations where the power differences of an emission received at different locations is taken to locate the emission source. Without considering wave propagation as well as terrain and clutter data this method would be imprecise. The AOA 100 DF antenna system offers several unique features like direction finding based on stored data with the DF Time Travel® technology as well as co-channel signal resolution with the multi-spot heatmap feature.
LS OBSERVER lives from its permanent innovations in software as well as hardware. New requirements from the market as well as individual suggestions from customers form the input for our agile development.
|Analysis based on stored data||Automatic Violation Detection (AVD)||Channel analysis|
|Constellation diagram||Demodulation||DF Time Travel|
|Direction finding||Fixed frequency mode||Frequency channel occupancy (FCO)|
|Geolocation||Homing||ITU signal parameter measurements|
|Marker||Measurement chart||Network management|
|Noise-free data||Power difference of arrival (PDoA)||Recording|
|Remote control||Rights management||Scan mode|
|Time difference of arrival (TDoA)||Waterfall display||Wave propagation calculation|
The remotely piloted aircraft (RPA) technology is adapted to carry a measurement sensor, high-resolution position and orientation sensors, an autopilot, a high-powered processor and storage unit and a telemetry system. The measurement and navigational data is stored on board and streamed to the ground control station in real time.
The RPA flies semi-remote controlled and in accordance with a pre-programmed flight path. Several safety features are built into the system amongst which is a ‘return to take-off point’ in the unlikely event of failure. Software for data analysis completes the system solution.
The technology determines the horizontal and vertical antenna radiation pattern as well as radiated power. You can identify faulty antennas and installation errors immediately. The measured antenna diagrams can be used in planning tools for the simulation and optimization of network coverage.