Indian Regional Navigation Satellite System (IRNSS) is independently originated, being run and operated by Indian Space Research Organization (ISRO). As of 2016 there are seven satellite being launched and operated named as 1A, 1B, 1C, 1D, 1E, 1F and 1G respectively in the IRNSS constellation. This paper presents MATLAB based SIMULINK models for IRNSS transmitter and receiver design. The PRN code is generated and used in modulation and demodulation of satellite navigation signals for L5 frequency. Further for the same frequency acquisition block is modelled to check which satellite is visible to the receiver and coarse estimation of code phase and carrier frequency is found. Carrier tracking loop is also implemented for fine estimation of acquired data.

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Prn Code Generation Irnss Irnss Transmitter Irnss Receiver Acquisition Tracking.