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Problem Addressed

A receiving wireless node may perform SAR and ISAR techniques on signals from independent transmitter devices to measure the relative power of the signals it receives from this transmitter. The key challenge to enable this technology is that radar techniques require both the transmitter and receiver to share a common frequency or clock reference. This is because independent transmitters and receivers suffer from a frequency offset between their clocks, as well as phase noise. The Inventors have developed a technology which leverages the multiple-input, multiple output (MIMO) capability of a multi-antenna receiver to perform radar techniques despite these frequency offsets.