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Electric underwater aircraft navigation speed measurement method and device based on Doppler effect

An underwater vehicle and Doppler effect technology, applied to measuring devices, radio wave measuring systems, instruments, etc., can solve problems such as inability to return in real time

Active Publication Date: 2016-07-27
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This measurement method requires the installation of transceiver transducers or arrays on the underwater vehicle, and the measurement results can only be recorded on the underwater vehicle, and cannot be transmitted back in real time.

Method used

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  • Electric underwater aircraft navigation speed measurement method and device based on Doppler effect
  • Electric underwater aircraft navigation speed measurement method and device based on Doppler effect
  • Electric underwater aircraft navigation speed measurement method and device based on Doppler effect

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0022] figure 1 It is a schematic diagram of hydrophone deployment for an underwater vehicle based on the Doppler effect provided by an embodiment of the present invention. Such as figure 1 As shown, the hydrophone is placed at a water depth of 15 meters, and the navigation depth of the electric underwater vehicle is also set at a water depth of 15 meters. The underwater vehicle sails directly, and the hydrophone is arranged directly behind the sailing direction of the underwater vehicle. Figure 2-3 The shown method and device for measuring the speed of an electric underwater vehicle based on the Doppler effect can be applied to image 3 The scene diagram shown.

[0023] figure 2 It is a flowchart of a method for measuring the speed of an electric underwater vehicle based on the Doppler effect provided by an embodiment of th...

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Abstract

The invention discloses an electric underwater aircraft navigation speed measurement method and device based on the Doppler effect.The method includes the steps that noise data generated when an electric underwater aircraft sails are collected; the frequency spectrum of noise data is obtained according to the noise data; a pair of line spectrums on the two sides of the center of the kth-cluster spectral line generated by a motor located in the frequency spectrum is determined according to the noise data; the navigation speed of the underwater aircraft is calculated through the Doppler effect with frequency shift which is k frequency doubling relative to inverter switching frequency.The device comprises an acquisition module, a first processing module, a second processing module and a calculation module.According to the electric underwater aircraft navigation speed measurement method and device based on the Doppler effect, the structure is simple, the motor noise feature that a frequency converter is utilized to supply power is reasonably utilized, and the navigation speed of the electric underwater aircraft is monitored in real time externally.

Description

technical field [0001] The invention relates to the field of passive sonar speed measurement, in particular to a method and device for measuring the speed of an electric underwater vehicle based on the Doppler effect. Background technique [0002] Speed ​​is an important technical index in the technical evaluation system of underwater vehicles. In order to measure the speed of an underwater vehicle, an existing technology is to install a beacon on the vehicle, determine the position of the underwater vehicle through a long baseline positioning system, and then calculate the underwater navigation speed by Kalman filtering and other methods. the speed of the machine. This measurement system, which needs to install beacons on underwater vehicles and deploy long baseline measurement units near the route, is extremely complex. [0003] Another speed measurement method in the prior art is to install a transducer on the head of the underwater vehicle, transmit a CW wave pulse sig...

Claims

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Application Information

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IPC IPC(8): G01S11/10
CPCG01S11/10
Inventor 马晓川张舒皓胡泽岩鄢社锋
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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