Non-line-of-sight identification method, apparatus, and medium based on subset band signed residual check

Abstract

The application discloses a non-line-of-sight identification method and device based on subset band signed residual inspection and a medium. The application comprises grouping positioning measurement data, intermediate estimation of the grouped data, calculation of a complete initial subset band signed residual matrix by using the intermediate estimation value, detection of a non-line-of-sight candidate hypothesis based on the initial subset band signed residual matrix, and establishment of a final non-line-of-sight base station combination from the candidate hypothesis. The application uses a subset band signed residual matrix, can effectively reduce the influence of front-end estimation on residual values, and improves the identification accuracy of an existing algorithm. The ML inspection proposed by the application unifies the selection process and criteria in multiple candidate hypothesis cases, can make a choice according to a maximum likelihood measurement obtained by strict calculation, and improves the selection accuracy of the candidate hypothesis.

Images