Artificial satellite and control method thereof
The present technology relates to an artificial satellite and a control method thereof that enable to ensure quality of a captured image while suppressing battery consumption. An artificial satellite includes: an imaging device configured to perform imaging of a predetermined region on the ground; and a management unit configured to change accuracy of attitude control in accordance with a remaining battery amount at an instructed imaging time, and configured to change an imaging condition in accordance with accuracy of the attitude control. The present technology can be applied to, for example, an artificial satellite or the like that performs satellite remote sensing by formation flight.
1. An artificial satellite comprising:
an imaging device configured to perform imaging of a predetermined region on ground; and
a management unit configured to:
change accuracy of attitude control in accordance with a remaining battery amount at an imaging time that is instructed, and
change an imaging condition in accordance with the accuracy of the attitude control.
2. The artificial satellite according to claim 1 , wherein
the management unit is further configured to estimate the remaining battery amount at the imaging time from a current remaining battery amount and a charge amount to be accumulated by the imaging time.
3. The artificial satellite according to claim 1 , wherein the management unit is further configured to:
determine whether there is a predetermined remaining battery amount at the imaging time from a power consumption element related to the imaging and a power consumption element of other than the imaging, and
change the accuracy of the attitude control in a case where it is determined that there is not the predetermined remaining battery amount.
4. The artificial satellite according to claim 3 , wherein
the power consumption element related to the imaging also includes a remaining battery amount necessary for imaging scheduled after the imaging time.
5. The artificial satellite according to claim 1 , wherein the management unit is further configured to determine whether it is possible to change a downlink timing in a case where it is determined that there is a predetermined remaining battery amount or less at the imaging time.
6. The artificial satellite according to claim 1 , wherein the management unit is further configured to change a range of a swing speed that is used for determining that a target attitude is obtained, as the change in the accuracy of the attitude control.
7. The artificial satellite according to claim 1 , wherein the management unit is further configured to change a shutter speed as the imaging condition.
8. The artificial satellite according to claim 1 , wherein the management unit is further configured to change sensitivity as the imaging condition.
9. The artificial satellite according to claim 1 , wherein the artificial satellite is configured to perform imaging by flying while maintaining a relative relationship with another artificial satellite.
10. A control method for an artificial satellite, the control method comprising:
by the artificial satellite including an imaging device configured to perform imaging of a predetermined region on ground,
changing accuracy of attitude control in accordance with a remaining battery amount at an imaging time that is instructed; and
changing an imaging condition in accordance with the accuracy of the attitude control.