Patent ID: 9494675
Filing Date: 2016-11-15
CPC Classification: G01S

Claim Text:
1. A nonlinear radar (NLR) comprising: transmitter circuitry configured to generate a plurality of base transmission pulses at a base transmission power; a switchable transmitter power-modifying circuit configured to receive the plurality of base transmission pulses, and for each of the base transmission pulses, to select a transmitter power-modification path from a first transmitter power-modification path that modifies the base transmission power to a first transmission power, and a second transmitter power-modification path that modifies the base transmission power to a second transmission power, the second transmission power being greater than the first transmission power; a transmitter antenna configured to transmit the power-modified transmission pulses toward a reflective object; a receiver antenna configured to receive a plurality of base reflected pulses at differing base reflected powers; a switchable receiver power-modifying circuit configured to receive the plurality of base reflected pulses, and for each of the base reflected pulses, to select a receiver power-modification path from a first receiver power-modification path that modifies the base reflected power to a first receiver power, and a second receiver power-modification path that modifies the base reflected power to a second receiver power, the first receiver power being greater than the second receiver power; receiver circuitry configured to process the power-modified reflected pulses, wherein each base reflected pulse corresponds to a corresponding power-modified transmission pulse that has been reflected off the reflective object, a transmission ratio of the first transmission power to the second transmission power is the same as a receiver ratio of the second receiver power to the first receiver power, the receiver circuitry is configured to subtract one of a first power-modified reflected pulse and a second power-modified reflected pulse from the other of the first power-modified reflected pulse and the second power-modified reflected pulse, the first and second power-modified reflected pulses are based on identical base transmission pulses, the first power-modified reflected pulse is at the first receiver power, and is based on a first power-modified transmission pulse that was transmitted at the first transmission power, and the second power-modified reflected pulse is at the second receiver power, and is based on a second power-modified transmission pulse that was transmitted at the second transmission power.