Patent ID: 6697013
Filing Date: 2004-02-24
Classification: G01S,H04K,H04W

Abstract:
A method of detecting radar signals in a wireless network device comprising the steps of:receiving a plurality of signal pulses as detected events; time stamping the events upon reception to produce a time stamp for an event of the detected events; eliminating any detected events that correspond to network traffic; determining whether any non-eliminated events of the individual detected events correspond to radar signals by examining at least one of: a pulse repetition frequency, a pulse period, or a number of pulses in a pre-defined time period, wherein determining a period of the event comprises performing a time domain analysis of the non-eliminated events; determining a first time interval between a first pulse and second pulse of the event; assuming that the first time interval represents the period of the event; and comparing the first time interval with a second time interval between the second pulse and a third pulse of the event to determine whether the first and second time intervals match to within an error factor associated with the time stamp for each detected event.