US 11,747,482 B2
APNT service positioning and integrity monitoring method and system
Zhipeng Wang, Beijing (CN); Yanbo Zhu, Beijing (CN); Siqi Huang, Beijing (CN); and Kun Fang, Beijing (CN)
Assigned to BEIHANG UNIVERSITY, Beijing (CN)
Filed by Beihang University, Beijing (CN)
Filed on Jan. 20, 2023, as Appl. No. 18/99,332.
Application 18/099,332 is a continuation of application No. PCT/CN2021/134998, filed on Dec. 2, 2021.
Prior Publication US 2023/0176228 A1, Jun. 8, 2023
Int. Cl. G01S 19/14 (2010.01); G01S 19/08 (2010.01); G01S 19/39 (2010.01)
CPC G01S 19/14 (2013.01) [G01S 19/08 (2013.01); G01S 19/396 (2019.08)] 10 Claims
OG exemplary drawing
 
1. An APNT service positioning and integrity monitoring method, comprising the following steps of:
determining a positioning accuracy requirement in a target scene;
when the positioning accuracy requirement is high-accuracy positioning, determining a position of an aircraft by adopting a combined positioning algorithm, and monitoring the integrity of a combined positioning by adopting a multi-solution separation mode;
when the positioning accuracy requirement is low-accuracy positioning, judging whether the aircraft is a high-altitude user;
if not, adopting an air-to-air positioning algorithm for a high-altitude user and a low-altitude user based on LDACS to determine the position of the aircraft, and adopting a least square residual method to monitor the integrity of the air-to-air positioning.