Direction of arrival estimation using linear array

An apparatus comprising:

• a linear array of sensors comprising at least two omni-directional sensors and at least one directional sensor, wherein the at least two omni-directional sensors produce output signals and the at least one directional sensor produces an output signal in response to a received signal;
• and
• a processor coupled to receive the output signals from the at least two omni-directional sensors and the output signal from the at least one directional sensor, the processor configured to use the output signals from the at least two omni-directional sensors and the output signal from the at least one directional sensor to determine a direction of arrival of the received signal with respect to the linear array of sensors.

A non-transitory computer-readable medium including program code stored thereon, comprising:

• program code to receive output signals from at least two omni-directional sensors and an output signal from at least one directional sensor in response to a received signal, wherein the at least two omni-directional sensors and the at least one directional sensor are arranged in a linear array;
• and
• program code to use the output signals from the at least two omni-directional sensors and the output signal from the at least one directional sensor to determine a direction of arrival of the received signal with respect to the linear array.