Linear chirp parameter estimation from multichannel data

In most multichannel models, narrowband signals are assumed transmitted, and existing algorithms for parameter estimation are based on this assumption. Here we exploit the wideband properties of a linear chirp signal to make common direction of arrival estimators more efficient. In addition to direction of arrival, linear chirp parameters are estimated. We propose a suboptimal two step algorithm for joint direction of arrival and chirp parameter estimation. Performance is evaluated on synthetic data. Further experimental data are available to complement the theory.