JPH054212U - Attitude detection device for geostationary satellite - Google Patents

Abstract

(57) [Abstract] [Purpose] Accurate attitude information is obtained by receiving laser light emitted from the earth toward a geostationary satellite by a two-dimensional gimbal-supported two-dimensional CCD mounted on the geostationary satellite. An attitude detection device for a geostationary satellite is provided. [Structure] A laser emitting device 1 on the earth and a two-dimensional CCD mounted on a geostationary satellite 2 for receiving the laser light.
3, a biaxial gimbal 4 that supports the two-dimensional CCD, a CCD signal processing 5 that processes the output of the two-dimensional CCD 3, and a gibbal that controls so that the distortion of the circle formed by the laser light on the two-dimensional CCD 3 becomes small. It has a control unit 6 and an angle encoder 7 that measures the gimbal angle controlled by the gimbal control unit 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is an attitude detection device for geostationary satellites for obtaining attitude information of geostationary satellites toward the earth. Regarding the table

[0002]

[Prior art]

  Conventionally, the attitude information of geostationary satellites toward the earth is obtained by detecting the temperature difference between the earth and deep space. A known attitude detector was used.

[0003]

[Problems to be solved by the device]

  The above-mentioned conventional geostationary satellite attitude detectors measure the temperature of the earth, The disadvantage that detected attitude information fluctuates due to seasonal fluctuations in temperature and atmospheric conditions. was there.

[0004]

[Means for Solving the Problems]

  The attitude detection device for geostationary satellite of the present invention is installed on the earth, A laser emitting device that emits light and a biaxial gin that mounts this laser light on a geostationary satellite A two-dimensional CCD that receives light by supporting a valve and a detection signal from this two-dimensional CCD And a CCD signal processing unit for obtaining accurate attitude information of the geostationary satellite.

[0005]

【Example】

  Next, the present invention will be described with reference to the drawings. FIG. 1 shows the structure of an embodiment of the present invention. It is a perspective view showing composition. In FIG. 1, the laser emitting device 1 on the earth is always It is aimed at geostationary satellite 2. The two-dimensional CCD 3 mounted on the geostationary satellite 2 has two It is supported by the axis gimbal 4. Laser light is received at the center of the two-dimensional CCD 3. , So that the distortion of the circle formed by the laser light on the two-dimensional CCD 3 is reduced. It is controlled by the valve control unit 6. Angle encoder 7 is attached to the biaxial gimbal 4. Has been.

[0006]   Next, the operation of this embodiment will be described. First, toward the geostationary satellite 2, laser on the earth -Laser is emitted from the emission device 16. The laser light emitted is a geostationary satellite. The focus is adjusted so that it becomes circular at a distance of up to 2. Geostationary satellite 2 side Receives the laser light by the two-dimensional CCD 3. The signal output of the two-dimensional CCD 3 is C It is processed by the CD signal processing unit 5. The biaxial cymbal 4 is processed by the CCD signal processing unit 5. Based on the processed signal, the laser light hits the center of the two-dimensional CCD3, The gimbal controller 6 reduces the distortion of the circle formed by the light on the two-dimensional CCD 3. Controlled by. An angle encoder 7 is attached to the biaxial gimbal 4. , The gimbal angle resulting from the control by the gimbal control unit 6 is measured. Measured The geostationary satellite 2 can obtain attitude information in the direction of the earth based on the gimbal angle. Laser light from the laser emitting device 1 on the earth is directed toward the earth from the geostationary satellite 2 side. It will be the absolute reference of direction. In addition, the circle formed by the laser beam on the two-dimensional CCD 3 Distortion of the geostationary satellite 2 represents a deviation of the attitude of the geostationary satellite 2 with respect to the earth. others The satellite attitude information detected by the geostationary satellite 2 based on the laser beam is a two-dimensional CCD. 3 and sensitivity of the angle encoder 7 attached to the biaxial gimbal 4 As a result, highly accurate satellite attitude information can be obtained.

[0007]

[Effect of device]

  As described above, according to the present invention, the reference direction for geostationary satellite attitude detection is set as the The launcher and the two-dimensional CCD that receives the laser beam direction and the geostationary satellite attitude And a CCD control unit that corrects the distortion of the circle formed by the laser light on the two-dimensional CCD. Since it has the accuracy of the posture information, it can be attached to the sensitivity of the two-dimensional CCD and the two-axis gimbal. The effect of improving attitude information detection accuracy, which is determined by the accuracy of the angle encoder There is.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a geostationary satellite attitude detection device according to an embodiment of the present invention.

[Explanation of symbols]

1 Laser emitting device on the earth 2 Geostationary satellite 3 two-dimensional CCD 4 biaxial gimbal 5 CCD signal processor 6 Gimbal controller 7 angle encoder

Claims (2)

[Scope of utility model registration request] 1. A laser emitting device which is installed on the earth and emits a laser beam toward a geostationary satellite, and a two-dimensional C which receives the laser beam by a biaxial gimbal support mounted on the geostationary satellite.
An attitude detection device for a geostationary satellite, comprising: a CD; and a CCD signal processing unit that processes the detection signal of the two-dimensional CCD to obtain highly accurate attitude information of the geostationary satellite. 2. A gimbal control unit for controlling so that distortion of a circle of laser light received by the two-dimensional CCD is reduced, and an angle encoder for measuring an angle of the controlled result. The attitude detection device for a geostationary satellite according to claim 1.