Spatial decoupling method for initial searches in geosynchronous earth orbit systems

Abstract

This invention discloses a spatial decoupling method for preliminary search of a geostationary orbit system, comprising the following steps performed sequentially: Step 1, analyzing the spatial selectivity of the received beamforming output and decoupling at least one one-dimensional decoupled search space from the joint / complete three-dimensional search space; Step 2, establishing and forming a corresponding two-dimensional reduced-dimensional search space based on the peak position guess from the decoupled search space, and performing a first peak position detection in the reduced-dimensional search space; Step 3, performing a second peak position detection in the decoupled search space based on the detection result of the first peak position detection; and Step 4, integrating the peak position detection results of the decoupled search space and the reduced-dimensional search space to reconstruct the final peak position. The present invention discloses a spatial decoupling method for initial search in a geosynchronous Earth orbit system, including the following steps executed in sequence: Step 1: analyzing the spatial selectivity of the receive beamforming output, and decoupling at least one 1D decoupled search space from the joint / full three-dimensional search space; Step 2: based on a peak location guess from the decoupled search space, establishing and forming a corresponding 2D retrograded search space, and performing a first peak location detection in the retrograded search space; Step 3: based on the detection result of the first peak location detection, performing a second peak location detection in the decoupled search space; and Step 4: integrating the peak location detection results from the decoupled search space and the retrograded search space to reconstruct a final peak location.

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