A system and method for measuring the three-dimensional structure of a hypervelocity collision debris cloud

Abstract

The invention discloses a system for measuring a hyper-velocity impact debris cloud three-dimensional structure. The system comprises a target chamber which is used for simulating the space environment; a target surface which is arranged on the target chamber, wherein the projectile collides with the target surface to generate the debris cloud; a velocity measuring instrument which is used for measuring the motion velocity of the projectile and calculating the motion time from the projectile to the target surface; a pulse laser which emits laser to the debris cloud; a beam expander which expands and collimates the emergent light of the pulse laser; a first lens module which realizes reduction of the beams passing through the debris cloud; a CCD camera which records the hologram of the debris cloud; a digital delay generator; a filter module which is installed in front of the CCD camera to weaken the laser and enhance the signal-to-noise ratio; an oscilloscope which records the time sequence of the velocity measuring instrument, the CCD camera exposure and the laser emergent voltage signal; and a computing module which acquires the debris cloud hologram recorded by the CCD camera and performs reconstruction by using the hologram reconstruction software so as to obtain the three-dimensional structure of the debris cloud and the size of the debris.

Description

technical field [0001] The invention relates to the technical field of ultra-high-speed digital holographic three-dimensional measurement, in particular to a system and method for measuring the three-dimensional structure of ultra-high-speed collision debris cloud. Background technique [0002] With the continuous exploration and development of outer space by human beings and the rapid development of aerospace technology, the number of space debris composed of final stage rockets, satellite explosions, burning residues of rocket engines, and peeled off paint flakes and coatings has increased sharply. And most of them are located in low-Earth orbit. The speed of these space debris generally ranges from a few kilometers per second to tens of kilometers per second, posing a great threat to the safety of spacecraft in orbit. [0003] During the high-speed impact process, the target material will undergo large deformation, fragmentation, and stratification damage caused by stres...

AI Technical Summary

Problems solved by technology

Nanosecond-level photoelectric shutters can achieve very short exposure times, but the equipment is expensive, and an embargo and technical blockade are imposed on my country

Regarding the measurement experiment of the three-dimensional structure of the ultra-high-speed collision debris cloud, no relevant information has been found at home and abroad

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