Bearing Localiser

Algorithm Configuration


Algorithm Dialog Tabs

The Basic Frequency Domain beamformer, MVDR Beamformer and TOAD Algorithms all have similar user-configurable options to generate Beamograms. Unlike the Beamformer module, the user cannot configure individual beams with the Bearing Calculator.



Configuring the Basic Frequency Domain and MVDR beamformers

A beamogram can be used to sweep an entire area. The resultant output is a 'heat-map' of the amplitude of the signal versus primary angle, secondary angle or frequency. The output can be shown on a User Display tab by selecting New Bearing Calculator Display.


  1. Array Information: The type of array as defined by the channels in this group. Valid angle ranges are given in the appropriate sections below. There are three possible array types: Linear, Planar and Volumetric.

  2. Checkbox indicating whether or not to calculate the beamogram.

  3. Primary angle parameters: the minimum, maximum and step size to use when sweeping the primary angle. The direction and valid range of the primary angle depends on the type of array (see above for details).

  4. Secondary angle parameters: the minimum, maximum and step size to use when sweeping the secondary angle. The direction and valid range of the secondary angle depends on the type of array (see above for details).

  5. The Frequency range: in order to speed up the calculations and prevent memory overflow problems, it is recommended that the frequency range over which the beamogram is calculated be limited to the frequencies containing the signals of interest.


Configuring the TOAD Algorithm

The TOAD algorithm uses the same primary and secondary angle parameters as the beamformer, but does not require a frequency range.


  1. Array Information: The type of array as defined by the channels in this group. Valid angle ranges are given in the appropriate sections below. There are three possible array types: Linear, Planar and Volumetric.

  2. Primary angle parameters: the minimum, maximum and step size to use when sweeping the primary angle. The direction and valid range of the primary angle depends on the type of array (see above for details).

  3. Secondary angle parameters: the minimum, maximum and step size to use when sweeping the secondary angle. The direction and valid range of the secondary angle depends on the type of array (see above for details).