Autonomous navigation semi-physical simulation test system based on ultraviolet sensor
A semi-physical simulation and test system technology, applied in the field of autonomous navigation, can solve problems that do not involve the ground test verification system, etc., and achieve the effect of simple and convenient control method, good measurement and calibration, and easy realization
Active Publication Date: 2015-03-18
BEIJING INST OF CONTROL ENG
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Domestically, a lot of research has been done on the autonomous navigation technology of satellites based on ultraviolet sensors, such as "Spacecraft Autonomous Navigation Based on Ultraviolet Sensors" published by Wei Chunling, Li Yong, and Chen Yiqing on Space Control, Volume 22, Issue 3, June 2004. "Introduced the relevant algorithms for autonomous navigation based on the Earth's ultraviolet information, but it did not involve the content of the corresponding ground test verification system
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[0022] Such as figure 1 Shown is the composition principle diagram of the autonomous navigation test system based on the ultraviolet sensor of the present invention. The system mainly includes ultraviolet sensor, ultraviolet earth simulator, dynamic star simulator, attitude orbit simulator, control computer and navigation computer. The circular field of view of the ultraviolet sensor is used to observe the earth simulator, and the central field of view is used to observe the dynamic star simulator. The control computer generates an earth disc size command to control the size change of the ultraviolet earth simulator disc according to the reference attitude orbit data, and generates an inertial attitude quaternion command to control the star map change of the dynamic star simulator. The navigation computer collects the measurement data of the ultraviolet sensor, performs autonomous navigation calculation, and compares the calculation result with the benchmark data of the attit...
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The invention provides an autonomous navigation semi-physical simulation test system based on an ultraviolet sensor. According to the invention, an annular field of view of the ultraviolet sensor observes an ultraviolet earth simulator; a central field of view of the ultraviolet sensor observes a dynamic fixed star simulator; measuring signals are sent to a navigation computer; an attitude orbit emulator calculates an attitude orbit of a satellite, and results of calculation are used as reference attitude orbit data and are sent to a control computer; according to the reference attitude orbit data, the control computer generates an earth disc size instruction to control the change of the size of a disk of the earth simulator and generates an inertial attitude quaternion instruction to control the change of a star image of the dynamic fixed star simulator; and the navigation computer calculates navigation wave filtering according to the measuring signals of the ultraviolet sensor so as to obtain an estimated value of satellite position and an estimated value of speed, and the estimated values are compared with reference data so as to obtain navigation precision. According to the invention, semi-physical simulation test based on real measurement data of the ultraviolet sensor is realized under the condition that hardware is in a circuit, and checking of performance of an autonomous navigation system of a satellite can be effectively carried out on the ground.
Description
technical field [0001] The invention relates to an autonomous navigation simulation test system, in particular to a semi-physical simulation test system for autonomous navigation based on an ultraviolet sensor, which belongs to the technical field of autonomous navigation. Background technique [0002] Autonomous navigation technology means that the satellite can determine the position and velocity of the satellite in real time only by on-orbit measurement equipment without relying on the support of the ground system, also known as autonomous orbit determination. For satellite systems, autonomous navigation is beneficial to reduce the dependence of satellites on the ground and improve the survivability of the system. For example, in wartime, when the ground measurement and control station is destroyed and interfered by the enemy, the orbit can still be determined and maintained. This is of great significance for military satellites. In addition, autonomous navigation can al...
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IPC IPC(8): G01C21/02G01C25/00
Inventor王大轶魏春岭刘良栋张斌李果黄翔宇
OwnerBEIJING INST OF CONTROL ENG