A Global Navigation Satellite System (GNSS) simulator is used to test GNSS receivers and the systems which rely on them. It provides control over the signals generated from different GNSS constellations and global testing environments in a box. This enables testing of signals in controlled laboratory conditions. A GNSS simulator generates the same type of signals which are transmitted by GNSS satellites, enabling GNSS receivers to process the simulated signals similar to the way those simulated from actual GNSS satellites are processed. It is an alternative to live environment testing. Unlike live testing, GNSS simulation provides complete control of simulated satellite signals and environmental conditions. Testers can run and create different test scenarios with a GNSS simulator and have complete control over the date, time, and location; vehicle motion; environmental conditions; and signal errors and inaccuracies. 1. Micromarkets are defined as the further segments and subsegments of the GNSS simulators market included in the report. 2. Core competencies of the companies have been captured in terms of their key developments, SWOT analysis, and key strategies adopted by them to sustain their position in the market.