Device for simulating dynamic imaging of TDI CCD camera

A technology for dynamic imaging and simulating devices, used in measurement devices, testing of machine/structural components, instruments, etc.

Inactive Publication Date: 2010-03-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The above applications are only for the simulation of the TDI CCD device and its processing circuit, and there is no record of the invention of the dynamic imaging simulation of the entire aerospace TDICCD imaging system

Method used

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  • Device for simulating dynamic imaging of TDI CCD camera

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Embodiment Construction

[0012] The TDI CCD camera dynamic imaging simulation device of the present invention presses figure 1 Installation and commissioning as shown: "Zero Gravity" three-axis air bearing platform 21 is a self-developed double-layer "umbrella" structure, with a load capacity of more than 600kg, a diameter of 1.5m, and a distance of 550mm between the upper and lower floors. The attitude control center on the three-axis platform Computer 1 uses Eurotech’s CPU-1462 as the main control computer, the operating system uses real-time multitasking VxWorks, the inclination sensor 2 is used for angle measurement of the horizontal axis, model LE-30, and the magnetometer 3 uses CXM539 for the vertical axis For the angle measurement, the fiber optic gyroscope 4 uses three VG951D made in Russia for the measurement of the three-axis attitude angular velocity. Currently, the attitude determination algorithm on the Extended Kalman Filter (EKF algorithm) is used. The baud rate adopted by the communica...

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Abstract

The invention provides a device for simulating dynamic imaging of a TDI CCD camera, belonging to the device in the field of simulating the imaging of spaceflight TDI CCD camera. In the device, a planar array CCD camera is arranged in a leveled three-axis air floating platform; an attitude control center computer on the platform measures the attitude angle and the attitude angular speed of the three axis of the platform real time by an attitude confirming system, obtains control signals by the processing of a control algorithm, carries out attitude control to the air floating platform by an executive mechanism flywheel, and transmits the real-time attitude information down to a simulation computer under the platform by a Bluetooth communication system in a wireless way, thus providing a real satellite attitude simulation system for the planar array CCD camera arranged on the three-axis air floating platform. The planar array CCD camera carries out real-time imaging on dynamic target surface and transmits the imaging result down to the simulation computer under the platform by a wireless local area network in real time; the simulation computer uses the transmitted image and the attitude information at corresponding time and utilizes a linear array pushbroom processing algorithm, thus being capable of realizing the simulation on dynamic imaging of TDI CCD cameras of different progressions.

Description

technical field [0001] The invention belongs to the device involved in the field of aerospace TDI CCD camera development and imaging simulation experiment. Background technique [0002] The study of space optical payloads is a high-risk, high-investment, highly complex and high-precision system engineering. In order to ensure the imaging performance of space optical payloads, in-depth and reliable theoretical research and physical simulation verification experiments must be carried out on the ground. At this stage, domestic research on physical imaging simulation of high-resolution aerospace optical cameras is almost zero, and there is no real-time imaging simulation method. After investigation, there are currently only three cases of domestic invention patent applications related to TDI CCD: 1. A simulation device for TDI CCD devices; 2. A photoelectric conversion simulation device and method for TDI CCD devices; 3. Aerospace optical remote sensors Simulation test method o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00G01M11/02
Inventor 张刘戴路徐开杨秀彬孙志远陈茂盛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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