Sensor Array and Multichannel Signal Processing (SAM) Research Laboratory
In general, a sensor array is a group of sensors placed in a certain geometry to collect data for the surroundings. Sensors can be in different form including acoustic, electromagnetic, and seismic wave sensing devices. Sensor arrays can be used for direction finding (DF) (or direction-of-arrival (DOA) estimation), beamforming, source localization, detection, estimation and communication purposes. In the passive scenario, sensors only collect data to extract the information from the incoming signals. In an active scenario, sensors emit signals to gather information from the returned echoes. For example, relative phases of the sensor signals are adjusted to beamform and listen to certain directions in the passive case. In the active operation, emitted signal phases are varied to form a transmit beam to illuminate a certain direction effectively. Radar and sonar are examples of active scenario.
Our research group is interested on detection, estimation and communication problems by using the sensor arrays.