COMMUNICATIONS SYSTEM

摘要

A communication method and system for communication utilizing modulation of digital signals, such as by targets and/or by use of low-complexity tags is presented. Targets may include any device or object that may alter signals, and tags can include a device with the ability to reflect and/or alter the properties of the signals and, in doing so, impose specific modulations on or alterations of such signals. Modulations can be sensed or detected using a receiver or receivers implementing processing algorithms derived from passive radar detection operations or other processes.

主权项

1. A communications system comprising:
a transmitter providing a series of transmission signals; a target modulating at least one transmission signal of the series of transmission signals transmitted by the transmitter that is incident to the target, so as to generate a modulated transmission signal; and a receiver receiving a composite signal, including a direct transmission signal from the transmitter and at least one component of the modulated transmission signal from the target, and comprising a processor configured to perform coherent processing on the composite signal to detect the at least one component of the modulated transmission signal and identify a characteristic of the target.