Bounds for 2-D Angle-of-Arrival Estimation with Separate and Joint Processing

Transmitting sources may be located by estimating the angles-of-arrival at a receiving array if the “direct path” is present, (i.e, the straight line path between source and destination). Angle-of-arrival estimation may be efficiently performed by well-known approaches such as MUSIC and ESPRIT, which are one-dimensional angle estimation methods. Yet many real-world applications require a two-dimensional angle-of-arrival estimation because the sources and receive array may not lie in a single plane.

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