Spatial spectrum estimation

Spatial spectrum estimation is a technique used to analyze signals received across multiple sensors or antennas arranged in space. It helps identify the directions or locations of sources emitting signals, such as radio waves or sound. By examining how signals combine and vary across the array, this method constructs a 'spatial spectrum'—a map showing the strength of signals from different directions. It’s widely used in radar, wireless communications, and sensor arrays to detect and locate sources accurately, enhancing our ability to interpret complex spatial environments and improve signal processing performance.