"Rabbit" simulation laboratory: 20 thousand LED simulation of the sun parallel light

A sunny winter day, the reporter walked into the China Aerospace Science and Technology Group Institute of space technology, Beijing Institute of control engineering. Push open the door of the experimental tower of the moon, a huge "sun" came into view, the red sun light to the entire test shed. A lunar rover is slowly walking on the high and low sand table, next to a few technical personnel to operate the computer, watching the data. A closer look, the sun from the opposite side of a nearly 100 square meters of giant lamp array.

Here is the chang e three patrol (Lunar Rover) rabbit (GNC) (guidance, navigation and control) subsystem physical simulation laboratory. Person in charge, this light is to simulate the moon on the sun's rays parallel to the light, before the moon to allow 'rabbit' here in advance to feel the temperature and brightness of the sun on the moon. "

Chang'e three patrol device equipped with cameras and other measuring equipment for environmental perception of terrain information acquisition. Large area illumination simulation is one of the key factors to test the performance of the camera.

Laboratory responsible person, the traditional manufacturing technology of solar simulator is usually with xenon lamp, halogen lamp as the light source of light, usually in the area of 1 square meters, can not meet the rover GNC system simulation test requirements. After the exploration, the test team boldly adopted the parallel light simulation equipment based on the LED lamp array, and the last 20 thousand LED and the corresponding condenser lens constituted the largest domestic parallel simulation system with three degrees of freedom.

Parallel optical simulation system finally put into use in September 2011, total support completed the physical simulation test Rover GNC prototype system and what is the two phase of the rover in development has played an important role in.