| Title |
UAS Positioning Methods based on Line-of-sight Datalink for EGI Corrected Navigation |
| Authors |
최재원(Jaewon Choi) ; 신동훈(Donghoon Shin) ; 조현종(Hyunchong Cho) |
| DOI |
https://doi.org/10.5573/ieie.2023.60.8.50 |
| Keywords |
Unmanned aerial system (UAS); Line-of-sight (LOS) datalink; Positioning; Embedded global positioning system (GPS) and inertial navigation system (INS) (EGI); Corrected navigation |
| Abstract |
In this paper, the unmanned aerial system (UAS) positioning methods based on the line-of-sight (LOS) datalink are presented for the embedded global positioning system (GPS) and inertial navigation system (INS) (EGI) corrected navigation. UAS guarantees the accuracy and stability of navigator using the composition navigation combining the GPS and INS. However, the accuracy of INS is not guaranteed in case that the quality of GPS receiving signal is not good because of the equipment fault or the interference by satellite jamming. UAS positioning methods using the LOS datalink is useful technique able to use the composition navigation correcting INS instead of GPS. The azimuth/elevation angle and distance between the ground terminal and UAS on the basis of the fixed ground data terminal of LOS datalink are needed to obtain the position(Latitude/Longitude/Altitude) of UAS. The azimuth/elevation angle is obtained by the monopulse tracking of ground data terminal, and the distance is calculated in the airborne data terminal by using the 1pps signal generated in the clock generation board of ground and airborne data terminals. The designs of UAS positioning methods based on LOS datalink and the flight and ground test results in the real system are presented in this paper. |