A Distributed Formation Joint Network Navigation and Positioning Algorithm

Abstract

In view of the problem that the leader-follower joint navigation scheme relies too much on the absolute navigation and positioning accuracy of the leader node, under the conditions of distributed network-centric warfare (NCW) and to meet the location service accuracy, reliability, and synergy efficiency of the future integrated communication, navigation (ICN), we built a joint navigation and positioning system with low Earth orbit (LEO), airborne data link, and inertial navigation system (INS) as the core; designed a ranging and time-synchronization scheme of the joint navigation and positioning system; and established a joint navigation and positioning method for formation and networking based on mutual ranging and velocity measurement information between aircrafts. Finally, based on the designed LEO constellation, the universality, effectiveness, superiority, and potential superiority of algorithm are verified, respectively. The simulation results show that the scheme can meet the requirements of joint location services in challenging environments, and could be used as a reference scheme for future ICN integration.

Three Satellites Dynamic Switching Range Integrated Navigation and Positioning Algorithm with Clock Bias Cancellation and Altimeter Assistance

“…(3) Improving Geometric Precision Factor by Eliminating Clock Bias. Consistent with the algorithm [12,25,26], we assume that the clock bias between the aircraft and the broadband LEO satellite has been eliminated; therefore, according to the principle of navigation and positioning, only three visible satellites are needed to solve for the user's location. More importantly, according to Equation (11) and the definition of the vertical dilution of precision (VDOP) [27], we can obtain:…”