Non-line-of-sight identification method and device based on subset signed residual test, and medium

• Main Authors: FANG LIDA, JIANG XINCHAO, WANG HONG, WANG SONG, JIANG CHENGNENG
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a non-line-of-sight identification method and device based on subset signed residual detection and a medium. The method comprises the steps of grouping positioning measurement data, performing intermediate estimation on the grouped data, calculating a complete initial subset signed residual matrix by using an intermediate estimation value, detecting non-line-of-sight candidate hypotheses based on the initial subset signed residual matrix, and determining a final non-line-of-sight base station combination from the candidate hypotheses. According to the method, the influence of front-end estimation on a residual value can be effectively reduced by utilizing a subset with a symbol residual (residual) matrix, and the identification accuracy of an existing algorithm is improved; according to the ML test provided by the invention, the selection process and criterion under the condition of a plurality of candidate hypotheses are unified, selection can be carried out according to the maximum l