Low-orbit binary difference/frequency difference precise correction method based on VRS difference principle

• Main Authors: Li Simin, Li Gang, Qin Yi, Cai Chenglin, Wei Zhaochuan, Wang Liangliang, Liu Changsheng, Li Chunhua
• Format: Patent
• Language: Chinese; English
• Published: 10.08.2016
• 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 a low-orbit binary difference/frequency difference precise correction method based on a VRS difference principle. A virtual reference station which does not exist physically is built nearby an unknown radiation source through employing a ground cooperation radiation source, and is used for correcting a time-frequency error of the unknown radiation source. The method enlarges the application range of a conventional method. Through the method, the correction precision of the time-frequency error of the unknown radiation source can reach 97%, and the frequency difference correction precision can reach 95%. Meanwhile, the corrected time-frequency difference is used for the positioning of the unknown radiation source. Compared with a conventional time-frequency difference positioning system, the method greatly improves the positioning precision. 本发明提供了种基于VRS差分原理的低轨双星时差频差精密修正方法，该方法利用地面合作辐射源在未知辐射源附近建立个物理上并不存在的虚拟参考站，从而利用此虚拟参考站去修正未知辐射源的时频误差。本发明不仅扩大了现有方法的应用范围，而且利用本发明去对未知辐射源时差改正精度可以达到97%，频差改正精度可以达