US Patent Issued on Nov. 4 for "ARAIM availability prediction method under complex terrain environment" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,252, issued on Nov. 4.

"ARAIM availability prediction method under complex terrain environment" was invented by Yanbo Zhu (Beijing), Zhipeng Wang (Beijing), Kun Fang (Beijing), Jingtian Du (Beijing) and Hongxia Wang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ARAIM availability prediction method under a complex terrain environment is provided. The method includes: 1) selecting positioning points according to an air line; 2) calculating terrain shielding angles; 3) predicting visible satellites; 4) determining a fault mode that needs to be monitored; 5) calculating a positioning error variance, an influence coefficient of a nominal devi...