What are errors arising from imperfections in phase measuring circuits and radio propagation effects known as?

Errors arising from imperfections in phase measuring circuits and radio propagation effects are referred to as site errors. These types of errors can occur due to environmental factors and inconsistencies in the measurement setup. For instance, variations in the physical location of the measuring device, obstacles in the radio path, or atmospheric conditions can all lead to discrepancies in the phase measurements being taken.

Phase measurement is highly sensitive to different site conditions, like multipath propagation, where a signal may take multiple paths to reach a receiver, causing phase distortions. Thus, site error specifically captures these variations that stem from the physical and electromagnetic characteristics of the measurement locations and conditions affecting radio wave propagation.

This understanding highlights the importance of calibrating equipment properly and taking site conditions into account to minimize measurement inaccuracies in electronic and communication systems.