A fiber-optic gyroscope (FOG) is expected to be the next generation gyroscope for guidance and control, because of various advantages. We have been developing the FOG-Inertial Navigation and Guidance (ING) for M-V satellite launching rocket of the Institute of Space and Astronautical Science (ISAS) since 1990. The FOG-ING consists of an Inertial Measurement Unit (IMU) and an Central Processing Unit Assembly. At current status, the proto-flight model FOG-IMU is being actively developed. And the flight test of the FOG-ING was performed on February 20, 1993, aboard M-3SII-7 satellite launching rocket at the ISAS test facilities in Uchinoura, Japan. This paper presents the signal processing technologies of our FOG which are used for the above FOG-ING.
A fiber-optic gyroscope(FOG) has already been selected to fulfill the inertial navigation system(INS) function of the new satellite launching vehicle of ISAS in Japan, and the flight test of our FOG was successfully demonstrated on February 22, 1990. This paper covers the aiming of development, design description, evaluation and productization of our FOG. Finally, reviews of a broader perspective of this new gyro technology are descussed.
In Japan the study of a fiberoptic gyroscope (FOG) was started in 1980. The FOG has been vigorously developed from both system architecture point of view and components. Now, interferometer-type FOGs (I-FOG) in Japan have reached the stage of field test. This paper presents the current status of the I-FOGs in Japan.
Over the last decade, the research and development of a fiber optic gyroscope (FOG) has made remarkable progress, and it is now recognized that this new technology will take the place of a traditional gyroscope during the 1990s. In fact, the flight test of this FOG was performed on February 22, 1990, aboard an S-520-11 rocket at ISAS's test facilities in Uchinoura, Japan. The flight test was successfully demonstrated. During the mission, the FOG rate sensor worked well and the expected performance of the FOG rate sensor was confirmed. This was the first experience for a rocket use of the FOG. This paper reviews the outlook of FOG during the 1990s based on the present status of FOG R&D.