Dorset-based companies Algosoft Solutions Ltd and Abbotsbury Software Ltd have set up a joint venture company, called JFilter Ltd, to develop and exploit a new generic sensor array processing (SAP) system that may be used for numerous applications and that is able to maintain its performance in the presence of malfunctioning equipment and bad data.
The JFilter SAP System is a fully-programmable multi-rate digital signal processor (DSP) for the sensor array processing of digital signals. The system produces robust time-domain, frequency-domain and matched-filtered beam data and possesses the following properties :-
- fault tolerance -> attainment of robust performance when used in operational environments;
- high performance -> attainment of required accuracy in both spatial and temporal domains + high throughput;
- computational efficiency -> exploitation of reduced-complexity recursive algorithms + adoption of optimum sampling rates + efficient memory management + ease of parallelisation;
- reconfigurability & scalability -> production of realisable solutions for sensor arrays of any size and shape;
- versatility -> applicability of system to any sensor array type, whether static or dynamic in nature + applicability of system to both low-pass and band-pass systems - implying capability of base-band operation &
- portability -> ability to map beamformer software onto any realistic platform.
As a result, the system is applicable to sensor arrays of arbitrary size and geometry, for both low-pass and band-pass systems, is able to maintain its performance in the presence of faulty sensors within the sensor array and glitches within the sensor array data, and is able to produce high quality time-domain beams to the required accuracy in both bearing and spectral content. The quality of the outputs enables post-beamformer functions, such as detection, localisation, tracking, classification and adaptive processing, to yield information of a superior quality to that achieved by existing sensor array systems.
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