Mar 29, 2019 · Estimating the distance between a GPS satnav device and at least three GPS satellites. This is done by measuring the time delay that a signal takes to be sent from the satellite to the GPS satnav, and converting this time delay into a distance, Using more advanced multilateration formulas based on a 3D model rather than a 2D model. Inverse square law states that, intensity is inversely proportional to the square of the distance from the origin. In this calculator, the distance and intensity can be calculated alternatively with the known value.
This radiation has little effect on far-field signal strength, but may contribute to some near-field signal strength depending on the frequency, and distance involved. This is yet another reason why field strength measurements have to be done in such a way to avoid any near-field radiation.
RSSI stands for Received Signal Strength Indicator. The problem with understanding RSSI strength is the fact that RSSI is not a "real" number. Rather it is a relative number that measures how strong a signal is when it's received by a device and it's heavily influenced by many factors. To better understand what RSSI is, consider the following: