Complex sentence: Cartosat-3 is the latest satellite of the Cartosat series of satellites from ISRO, the current generation of Indian remote sensing satellites, which are intended to replace the IRS series.
Split into simpler sentences: CARTOSAT-3 is the latest satellite of the CARTOSAT series of satellites from ISRO. CARTOSAT are the next generation of Remote sensing satellites, and are intended to replace the IRS series.