GPS/INS/Seeker Integrated Navigation System for the Case of GPS Blockage

Woo Hyun Kim, Jang Gyu Lee, Hyung Keun Lee, Chan Gook Park

School of Electrical Engineering and Computer Science, Seoul National University, 133-dong, ASRI #610, San 56-1, Sillim-dong, Gwanak-gu, Seoul, 151-742, South Korea.
School of Electronics, Telecommunication & Computer Eng., Korea Aerospace University, 200-1, Hwajon-dong, Deokyang_gu, Goyang-city, Kyunggi-do, 412-791, South Korea.
School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul, 151-744, South Korea.

DOI:                 

Abstract

When GPS blockage occurs for a loosely coupled GPS/INS system, its navigation error diverges. To deal with such cases, this paper introduces an integration scheme for GPS, INS, and an image sensor. The proposed integration scheme is attractive in that it accomplished the position and velocity accuracy improvement by the angular information only. The angular information is provided by the gimbal angles of the image sensor. A realistic scenario is studied by a simulation to demonstrate that the GPS/INS/Image integrated navigation system works effectively.

Keywords

Image sensor, inertial navigation system (INS), GPS/INS/Image Integrated Navigation System, GPS/INS loosely coupled system

Conflicts of Interest

The authors declare no conflicts of interest.

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