The problem of designing robust and accurate receivers for global navigation satellite system (GNSS) signals in harsh multipath environments has gained high attention. Some hardware architectures of the correlator to reduce the multipath effects and signal processing schemes to eliminate the multipath signals have been used for many years, but in challenging applications such as low-cost navigation receivers, their design procedure would become intricate. This paper, therefore, describes an algorithm to detect, validate and exclude the multipath signal in the measurement domain. For these experiments, a pair of low cost GPS receivers was also deployed to assess the accuracy and the data from these receivers was post-processed for further reasoning and conclusions. The analysis of this data demonstrated that the performance of the proposed algorithm has been improved for the harsh signal conditions due to the presence of multipath.