USE OF MULTITHRESHOLD DECODERS IN EARTH REMOTE SENSING SYSTEMS

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USE OF MULTITHRESHOLD DECODERS IN EARTH REMOTE SENSING SYSTEMS

The Ryazan state radio engineering universityThe Ryazan state radio engineering university

OvechkinOvechkin G.V.,G.V., OvechkinOvechkin P.V.P.V.

The specialized site of SRI RSA on multithreshold decodersThe specialized site of SRI RSA on multithreshold decoders:: www.mtdbest.iki.rssi.ruwww.mtdbest.iki.rssi.ru

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Earth remote sensingEarth remote sensing

The specialized site of SRI RSA on multithreshold decodersThe specialized site of SRI RSA on multithreshold decoders::www.mtdbest.iki.rssi.ruwww.mtdbest.iki.rssi.ru

Earth remote sensing (ERS) is used for observing Earth remote sensing (ERS) is used for observing the Earth’s surface by the aviation and space the Earth’s surface by the aviation and space

systemssystems

CartographyCartographyCity planningCity planningNatural resourcesNatural resourcesAgricultureAgricultureForestryForestryEcologyEcologyTransportTransportCommunicationCommunication

ERS data can be used for the decision of tasks in various ERS data can be used for the decision of tasks in various areas:areas:

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The equipment of reception-transmission The equipment of reception-transmission data in ERS systemsdata in ERS systems


Requirements to the equipment of reception-transmission Requirements to the equipment of reception-transmission data in ERS systemsdata in ERS systems::

High transferring speed of transferHigh transferring speed of transferEffective error correction algorithmsEffective error correction algorithms

Noise

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Multithreshold decodersMultithreshold decoders


Simplicity of practical realization Simplicity of practical realization ((Low costLow cost, , High reliabilityHigh reliability, , high-high-speed performancespeed performance););Effective error correction algorithm;Effective error correction algorithm;Decoding complexityDecoding complexity O(n);O(n);Decoding speed up to several Gbit/sDecoding speed up to several Gbit/sCoding gain - Coding gain - 7-8 7-8 dBdB

The multithreshold decoder is the majority decoderThe multithreshold decoder is the majority decoder

The basic advantages of multithreshold decodersThe basic advantages of multithreshold decoders

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A scheme of the A scheme of the multithreshold decodermultithreshold decoder


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Performance of multithreshold decoderPerformance of multithreshold decoder


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The scheme of non-binary multithreshold The scheme of non-binary multithreshold decoderdecoder


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Performance of non-binary multithreshold Performance of non-binary multithreshold decoderdecoder with RR=1/2=1/2


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Performance of non-binary multithreshold Performance of non-binary multithreshold decoderdecoder with RR=19/20=19/20


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The cascade coding scheme consisting from non-The cascade coding scheme consisting from non-binary MTD and Hamming code decoderbinary MTD and Hamming code decoder


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Performance of the cascade coding scheme Performance of the cascade coding scheme consisting from non-binary MTD and Hamming code consisting from non-binary MTD and Hamming code

decoderdecoder


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Thanks for attentionThanks for attention

Big volume scientific and teaching materials on multithreshold Big volume scientific and teaching materials on multithreshold decoders can be found on the specialized site of SRI RSAdecoders can be found on the specialized site of SRI RSA: :

www.mtdbest.iki.rssi.ruwww.mtdbest.iki.rssi.ru

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USE OF MULTITHRESHOLD DECODERS IN EARTH REMOTE SENSING SYSTEMS