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Dynamic spectrum allocation is becoming a means of allocating spectrum based on users and available frequencies in surrounding geographic regions. Presently, spectral masks are applied to radar transmission based on specifications from governmental regulatory agencies. This paper describes a concept for dynamic spectral mask determination based on the location and acceptable interference power levels...
In reconfigurable transmitter amplifiers, it is often desirable to simultaneously optimize multiple circuit characteristics, including load impedance, input power, and bias voltages. We compare different algorithms for multi-parameter circuit optimization using the Smith Tube. Comparison is performed between gradient, pattern, and simplex searches in 2, 3, 4, and 5 dimensions. While simplex performs...
The radar ambiguity function describes the possibility of errors in range and Doppler detection for targets of certain range-Doppler combinations. Nonlinear power amplifiers in radar transmitters provide many undesirable effects, including spreading of the radar spectrum. Based on the known impacts of the power amplifier nonlinearities on the waveform and spectrum that is transmitted, this paper assesses...
Increasingly stringent spectral spreading constraints are motivating a paradigm shift in the spectrum engineering of radar systems. Future spectrum requirements will likely dictate narrower spectral masks that will change based on geography. The desire to operate radar systems efficiently with waveforms that will provide desired detection capabilities must mesh with the need to meet spectral mask...
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