What is multipath error in GPS?

Multipath error results from interference between two radio waves which have travelled paths of different lengths between the transmitter and the receiver. GPS multipath is caused by the reception of signals arrived not only directly from satellites, but also reflected or diffracted from the local objects.Click to see full answer. In this manner, what is a multipath error?multipath error. [satellite imaging] Errors caused when a satellite signal reaches the receiver from two or more paths, one directly from the satellite and the others reflected from nearby buildings or other surfaces. Signals from satellites low on the horizon will produce more error.Subsequently, question is, what are the sources of errors in GPS? These sources of errors are as follows: refraction in the ionosphere, refraction in the troposphere, GPS positioning precision and multipath phenomena. Error #1: refraction in the ionosphere. Error #2: refraction in the troposphere. Error #3: GPS positioning precision. Error #4: Multipath errors. Similarly one may ask, how can multipath error be reduced? This delayed signal can cause the receiver to calculate an incorrect position. The simplest way to reduce multipath errors is to place the GNSS antenna in a location that is away from the reflective surface. When this is not possible, the GNSS receiver and antenna must deal with the multipath signals.How do you fix GPS errors? Follow these instructions if you have a problem caused by mapping errors in your own GPS device or app. 1 Update your device. Make sure your device has the latest version of its navigation software and map data. 2 Submit a correction through your device. 3 Submit a correction online. 4 Wait patiently. 5 Understand.