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In-bore projectile speed measuring system and measuring method

A speed measurement and projectile technology, which is applied in the field of the projectile speed measurement system in the chamber, can solve the problems of low energy utilization rate, unfavorable detection of annular interference fringes, etc., achieve strong anti-interference ability, improve laser energy utilization rate, and reduce testing cost effect

Pending Publication Date: 2021-06-18
XIAN TECH UNIV
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Problems solved by technology

Solve the problems of low energy utilization and ring interference fringes that are not conducive to detection when using FPI interferometers

Method used

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  • In-bore projectile speed measuring system and measuring method
  • In-bore projectile speed measuring system and measuring method
  • In-bore projectile speed measuring system and measuring method

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Embodiment Construction

[0021] In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0022] The present invention provides a velocity measuring system in a ruthenium. See figure 1 , Including a continuous laser 1, the emitter side of the continuous laser 1 sequentially disposed with a first mirror 2, a telephoto lens group 3, and a second mirror 4, wherein the first mirror 2 is in the middle, the first A zilled diameter lens group 6 is provided on the reflected optical path of the mirror 2, and the telephoto lens group 3 is composed of 1 to 3 flat lens, and the diazilizing lens group 6 is composed of a flat convex lens 13 and a flat convex lens 14, in a diazilizing lens. The section 6 side is provided with a visual frequency and optical detection assembly; the evidence and optical detecting assembly sequentially include a narrowband filter 7, ...

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Abstract

The invention discloses an in-bore projectile speed measuring system and method. The system comprises a continuous laser, the emergent light side of the continuous laser is sequentially and coaxially provided with a first reflector, a long-focus lens group and a second reflector, and the middle of the first reflector is provided with a hole; a reducing lens group is arranged on a reflection light path of the first reflector; one side of the reducing lens group is provided with a frequency discrimination and optical detection assembly, the frequency discrimination and optical detection assembly sequentially comprises a narrow band filter, a fixed cavity Fizeau interferometer, a plano-convex lens, a cylindrical lens and a streak camera which are coaxially arranged, and the streak camera is connected with the signal processing unit. The Fizeau interferometer with a fixed cavity structure is adopted as a frequency discriminator, the structure is simple, the external interference resistance is high, adjustment of the interferometer can be avoided in measurement, and the measurement efficiency is improved; and the generated interference fringes are linear fringes, and the utilization rate of laser energy is greatly improved after the interference fringes are converged along the direction of the fringes through the cylindrical lens, so that detection is facilitated, and subsequent signal processing is facilitated.

Description

Technical field [0001] The invention belongs to the field of target field ballistic parameter test technology, and involves a velocity measurement system and measurement method for the bulletum velocity. Background technique [0002] The measurement of sports velocity in the barrels is important for the development of internal ballistic theory, researching new artillery, light weapons, and weapons. [0003] Projectiles Template Speed ​​Test Common Methods There are numerical simulations, microwave interference measurement technology and laser interference speed technology. Numerical simulation is an ideal deduction under certain assumptions, and thus the inner ballistic motion parameters are uncertain. The microwave interference technique uses Doppler principal speed, which is limited to the wavelength of the microwave itself (cm grade or millimeters) far greater than the laser wavelength, so its measurement accuracy is far less than the laser interference speed. Laser interferen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/58
CPCG01S17/58
Inventor 谭林秋倪晋平李海王谦董涛
Owner XIAN TECH UNIV
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