Chip-scale radio-frequency localization devices and associated systems and methods
摘要
說明書
In some embodiments, each of the interrogators onboard PCB 204 may obtain respective information indicative of the distance between the interrogator and a target device, and provide it to control circuitry 210 for processing in furtherance of determining a location of the target device. Non-limiting examples of such information, that may be obtained by an interrogator, include an analog mixed RF signal (obtained by mixing a version an RF signal used to interrogate the target device with a responsive RF signal transmitted by the target device), a sampled version of the analog mixed RF signal, a time-domain waveform obtained by applying a transform (e.g., an inverse discrete Fourier transform) to the sampled version of the analog mixed signal, an estimate of the time of flight between the interrogator and the target device (e.g., obtained from the time-domain waveform), or an estimate of the distance between the interrogator and the target device. Control circuitry 210 may obtain such information from each of the interrogators and process the obtained information in order to: (1) obtain estimates of distance between each of the interrogators and the target device (to the extent that such estimates are not already provided by the individual interrogators themselves); and (2) determine the target device's location (e.g., the location in 3D coordinates) based on the distance estimates.
