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The current manuscript describes a methodology to derive velocity and acceleration of NavIC satellites from the broadcast ephemeris. A fourth-order central differencing formula is used to derive NavIC satellites' Earth-Centred-Earth-Fixed (ECEF) velocity from the ECEF positions that are calculated using the standard IRNSS-SIS-ICD algorithm. The proposed methodology is quite simpler and straight forward than the conventional rotation matrix method and therefore it can be a very good alternativedoi:10.33889/ijmems.2018.3.3-021 fatcat:jdjlyrazljem7bmb7awym4t3pe