17 research outputs found
Underwater acoustic imaging: image due to a specular reflector in the geometrical-acoustics limit
A Note on the HRT Conjecture and a New Uncertainty Principle for the Short-Time Fourier Transform
Synthesizing cross-ambiguity functions using the improved bat algorithm
The cross-ambiguity function (CAF) relates to the correlation processing of signals in radar, sonar, and communication systems in the presence of delays and Doppler shifts. It is a commonly used tool in the analysis of signals in these systems when both delay and Doppler shifts are present. In this chapter, we aim to tackle the CAF synthesization problem such that the synthesized CAF approximates a desired CAF. A CAF synthesization problem is addressed by jointly designing a pair of waveforms using a metaheuristic approach based on the echolocation of bats. Through four examples, it is shown that such an approach can be used as an effective tool in synthesizing different types of CAF