Non-cooperative positioning method of three-dimensional wireless sensor network based on RSS and AOA

• Main Authors: QI QINKE, LI YOUMING
• Format: Patent
• Language: Chinese; English
• Published: 07.01.2020
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses a non-cooperative positioning method of a three-dimensional wireless sensor network based on RSS and AOA, and the method comprises the following steps of establishing a measurement model of the RSS measurement value obtained by each anchor node, and both measurement models of the azimuth measurement value and elevation measurement value in the AOA measurement value obtainedby each anchor node; obtaining a non-convex positioning problem according to the respective approximate expressions of the three measurement models, combined with the least squares criterion; obtaining an equivalence problem of the non-convex positioning problem by introducing auxiliary variables and relaxation variables; relaxing the constraints in the equivalence problem of the non-convex positioning problem by using the second-order cone relaxation method and semi-positive definite relaxation method to obtain a mixed semi-positive definite/second-order cone programming problem; and solvingthe mixed semi-positive d