Beidou positioning data graphic regularization method with geographic information characteristics

• Main Authors: YANG KAIWEI, LI ENNING, WANG YASHENG, FENG FUYUAN, ZHANG TONGZAN, ZHANG LINA, DONG XIAONING, LIU RONGBIN, LI BO
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; 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 Beidou positioning data graph regularization method with geographic information characteristics, and belongs to the technical field of satellite positioning data processing, and the method comprises the following steps: 1, calculating the operation area Sw1 and the contour area Sw2 of a plot graph Pw; step 2, anticlockwise rotating all track points of the current plot graph Pw by theta degrees according to a coordinate rotation transformation formula; 3, generating a circumscribed rectangle, and obtaining the length L, the width w and the area Sw3 of the circumscribed rectangle; and 4, calculating the area ratio r of the current plot graph Pw, and if r is greater than rth, executing the step 5 and the like. The method has the beneficial effects that (1) different types of irregular plot graphs can be identified, classified and effectively removed; (2) normal plot graphs can be effectively extracted and reserved from irregular plot graphs; (3) the method is simple in operation, low in