Performance benchmarking for wireless location systems

Accuracy criteria for wireless location systems have been the subject of much discussion due to the different interpretations and assumptions regarding the requirements that were stated in the FCC's wireless E-911 ruling. Indeed, these requirements cover only the expected accuracy/error percentage in location measurements, which is insufficient because it allows potentially misleading information from and about location systems. This article draws analogies with well-known performance criteria for wireless communications systems toward setting a comprehensive suite of benchmarks for wireless location systems.