LP norm positioning method in hybrid LOS/NLOS scene

• Main Authors: HE CHENGWEN, YUAN YUNBIN
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2020
• 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 provides an LP norm positioning method used in a hybrid LOS/NLOS scene in a wireless sensor network. The method comprises the steps of: converting basic positioning equations of different sensors in different positioning modes into an expression of AX = b + e in a unified manner; converting the expression into an LP norm expression; and performing iterative solution on the LP norm expression by using an alternating direction multiplier method so as to quickly obtain a positioning solution. According to the method, the time of arrival (TOA), the time difference of arrival (TDOA) or other information in a positioning system is collected as an observation value, and then an AX = b model is constructed in a unified mode. In a hybrid LOS/NLOS environment, the residual error of theAX = b model has sparsity, so that the norm method provided by the invention can be used for solving, the positioning precision of an indoor wireless sensor network positioning system can be improvedthrough the method, and t