A remote sensor on-orbit calibration light source emission system
A launch system and remote sensor technology, applied in the field of on-orbit calibration light source launch system for remote sensors, can solve the problems that the calibration system cannot use micro-nano cameras, achieve flexible layout, achieve overall weight reduction, and reduce optical-mechanical deformation effects
Active Publication Date: 2020-05-08
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology
[0005] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a remote sensor on-orbit calibration light source emission system, to solve the problem that the existing calibration system cannot be applied to micro-nano cameras
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[0036] Such as figure 1 , figure 2 As shown, it is an on-orbit calibration light source emission system for remote sensors of the present invention, which includes: a light source emission module, a light spot receiving module and a emission frequency determination module.
[0037] Transmission frequency determination module: change the temperature of the remote sensor to be calibrated, determine the emission duration of the calibration light source according to the self-calibration pointing accuracy of the remote sensor to be calibration, and determine the alternative frequency of the calibration light source related to the emission duration according to the emission duration of the calibration light source; at the same time, According to the data transmission rate of the remote sensor to be calibrated, determine the candidate frequency of the calibration light source related to the transmission rate; select the candidate frequency with a small value as the transmission freq...
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A transmitting system of a remote sensor on-orbit calibration light source, comprising: a light source transmitting module, a light spot receiving module, and a transmitting frequency determining module. The transmitting frequency determining module determines calibration light source alternative frequencies associated with transmitting durations and calibration light source alternative frequencies associated with transmission rates; selects an alternative frequency having the smallest value from the calibration light source alternative frequencies associated with the transmitting durations and the calibration light source alternative frequencies associated with the transmission rates as a transmitting frequency of a calibration light source; and sends the transmitting frequency of the calibration light source to the light source transmitting module. The light source emission module uses a second pulse signal transmitted by a whole-satellite service system as an enabling signal, transmits the calibration light source according to the transmitting frequency of the calibration light source, and transmits the calibration light source to the light spot receiving module through a to-be-calibrated remote sensor after homogenizing and shaping the calibration light source. The light spot receiving module collects an optical signal of the calibration light source transmitted by the light source transmitting module, converts the optical signal into an electric signal to output outwards. The transmitting system of the remote sensor on-orbit calibration light source is simple in structure, convenient to install and high in reliability, and is particularly suitable for micro-nano satellites with no more than 30 Kg by weight.
Description
technical field [0001] The invention relates to an on-orbit calibration light source emission system for a remote sensor, belonging to the technical field of on-orbit calibration. Background technique [0002] In order to realize the on-orbit remote sensing parameter calibration function of remote sensing cameras and improve the surveying and mapping capabilities of remote sensing cameras, the on-orbit calibration method of collimated light measurement is being vigorously studied at home and abroad. This method has been realized by engineering principles on medium and large cameras. However, in order to realize the on-orbit remote sensing parameter calibration function of the camera on the micro-nano remote sensing satellite to improve the positioning accuracy, it is impossible to directly transplant and apply the calibration system on the medium and large camera, because the weight of the micro-nano camera (within 30kg) must be satisfied. , size, stability and other aspect...
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IPC IPC(8): G01M11/02
CPCG01M11/0207
Inventor 吴俊蒙裴贝邸晶晶姜宏佳许云飞李瀛搏李玲阮宁娟孙德伟
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH