1 May 2017 Linearizing an intermodulation radar transmitter by filtering switched tones
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Abstract
For nonlinear radar, the transmit power required to measure a detectable response from a target is relatively high, and generating that high power is achieved at the cost of linearity. This paper applies the distortion mitigation technique Linearization by Time-Multiplexed Spectrum (LITMUS) to intermodulation radar, a type of nonlinear radar which receives spectral content produced by the mixing of multiple frequencies at a nonlinear target. By implementing LITMUS, an experimental detection system for an intermodulation radar achieves a signal-to-noise ratio up to 20 dB for a total transmit power of approximately 80 mW and nonlinear targets placed at a standoff distance of 2 meters.
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Gregory J. Mazzaro, Andrew J. Sherbondy, Kenneth I. Ranney, Kelly D. Sherbondy, Anthony F. Martone, "Linearizing an intermodulation radar transmitter by filtering switched tones", Proc. SPIE 10188, Radar Sensor Technology XXI, 101881A (1 May 2017); doi: 10.1117/12.2255047; https://doi.org/10.1117/12.2255047
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