High-precision low-track double star seamless passive positioning method and system

• Main Authors: ZHAO LI, XUE YANRONG, LI XIAOHUI, CAI CHENGLIN, WEI ZHAOCHUAN, WU HAITAO, DENG HONGGAO
• Format: Patent
• Language: Chinese; English
• Published: 25.07.2012
• 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 high-precision low-track double star seamless passive positioning method and a high-precision low-track double star seamless passive positioning system, and aims to solve the problems of positioning precision and blind area in a time difference and frequency difference positioning system for low-track double stars. The accurate known characteristics at known radiation source positions in a coverage area are fully utilized, and the positioning precision of an unknown radiation source is improved through the position difference between the unknown radiation source and the known radiation source; meanwhile, a positioning blind area is effectively eliminated based on a multi-epoch time difference method. By the method and the system, the low-track double star passive positioning precision can be effectively improved, the problem of positioning the blind area brought by the time difference and frequency difference positioning system can be effectively solved, and seamless positioning in t