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\secc Custom digitalization system
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\secc Custom digitalization system
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Custom designs usually uses non-recurring engineering for development specific solution for observation project thus costs of this instruments are very high if developed instrument are not reproduced many times. Typical instrument developed in one piece with leads to enormous founding resources draws is Arecibo ALFA survey multi beam feed Array.
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Custom designs usually uses non-recurring engineering for development specific solution for observation project thus costs of this instruments are very high if developed instrument are not reproduced many times. Typical instrument developed in one piece with leads to enormous founding resources draws is Arecibo ALFA survey multi beam feed Array.
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Another opposite example for custom receiver and digitalization unit design is LOFAR system developed by Astron in Netherlands. \url{http://arxiv.org/abs/1305.3550}
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Another opposite example for custom receiver and digitalization unit design is LOFAR system developed by Astron in Netherlands. \url{http://arxiv.org/abs/1305.3550}
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LOFAR is innovative radioastronomy system which uses the phased antenna array approach in enormous scale and thousands of antennas are manufactured an deployed on field. The center of LOFAR system is situated in Netherlands and periferal antennas and network are extended to other European countries.
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LOFAR project must use low cost hardware due to project scale to keep overall project budget at acceptable levels. LOFAR in order of thisuses direct sampling receiver technology
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