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Method and device for monitoring flight speeds of air vehicle and environmental parameters thereof

A technology of flight speed and environmental parameters, applied in the field of laser spectroscopy, can solve the problems of high flight altitude, fast flight speed, difficulty in early detection, early warning and accurate tracking by ground radar, etc., and achieve high signal-to-noise ratio of detection signals and reduce background Influence of the environment, the effect of avoiding the influence of the measurement spectrum

Active Publication Date: 2019-07-09
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

The flying speed of this kind of hypersonic aircraft exceeds Mach 5, and it is difficult for ground radar to detect in advance, early warning and precise tracking
However, due to the characteristics of fast flight speed and high flight altitude of this hypersonic vehicle, its successful development faces great challenges

Method used

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  • Method and device for monitoring flight speeds of air vehicle and environmental parameters thereof
  • Method and device for monitoring flight speeds of air vehicle and environmental parameters thereof
  • Method and device for monitoring flight speeds of air vehicle and environmental parameters thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawings and examples of implementation. see Figure 1 to Figure 5 , a method for monitoring the flight speed of an aircraft and the environmental parameters in which it is located. The laser emitted by a single longitudinal mode narrowband laser 2 interacts with the gas to generate Rayleigh-Brillouin scattering. Using a multi-longitudinal mode laser with a wide radiation linewidth 16 The heterodyne method measures the Rayleigh-Brillouin scattering spectrum, combines the gas scattering theory and the model to obtain the atmospheric molecular density and temperature information of the environment where the aircraft is located, and at the same time measures the different flight speeds of the aircraft 1 according to the Doppler effect, and finally realizes Simultaneous and accurate measurement of multiple parameters. Its device includes a single longitudinal mode narrow-band laser 2 and...

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Abstract

The invention discloses a method and a device for monitoring flight speeds of an air vehicle and environmental parameters thereof. The emitted laser of a single-longitudinal mode narrowband laser interacts with the air to generate Rayleigh-Brillouin scattering, a Rayleigh-Brillouin scattering spectral line is measured by using a heterodyne method of a multi-longitudinal mode laser with a wide radiation line width, the atmospheric molecular density and the temperature information of the environment where the air vehicle is located are obtained by combining the gas scattering theory with a model, meanwhile different flight speeds of the air vehicle are measured according to the Doppler effect, and finally, multiple parameters are simultaneously measured accurately. The method and the devicedisclosed by the invention have the advantages of simultaneously and accurately monitoring multiple parameters from ow speed to high speed and from low altitude to high altitude in real time in all weathers, high sensitivity and high temporal-spatial resolution.

Description

technical field [0001] The invention belongs to the technical field of laser spectroscopy, and in particular relates to a method and a device for monitoring the flight speed of an aircraft and the environment parameters in which it is located. Background technique [0002] With the gradual improvement of the modern air defense system, the performance of air defense weapons is gradually improving. In order to improve their own national defense security and strategic deterrence capabilities, countries are scrambling to develop hypersonic aircraft with fast response capabilities, strong defense penetration capabilities, large destructive capabilities, and advanced technology. Sonic missiles and China's WU-14 hypersonic vehicle are the main representatives. The flight speed of this kind of hypersonic vehicle exceeds Mach 5, and it is difficult for ground radar to detect, warn and track accurately in advance. However, due to the characteristics of fast flying speed and high fly...

Claims

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Application Information

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IPC IPC(8): G01D21/02G01S17/58G01S17/95
CPCG01D21/02G01S17/58G01S17/95Y02A90/10
Inventor 吴涛商景诚何兴道杨传音王浩陶俊中
Owner NANCHANG HANGKONG UNIVERSITY
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