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Sonar PMW transmitting circuit

A technology of pulse width modulation and transmitting circuit, applied in pulse duration/width modulation, radio wave measurement system, instrument, etc., can solve problems such as reverberation of sonar transmitting circuit, reduce useless power consumption, increase safety and Reliability, the effect of reducing the voltage

Inactive Publication Date: 2015-01-07
HAIYING ENTERPRISE GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of suppressing reverberation, anti-jamming and completing tactical communication work in the sonar transmitting circuit, the present invention provides a sonar PWM pulse width modulation transmitting circuit to solve the above problems

Method used

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Embodiment Construction

[0022] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0023] As an embodiment of the present invention, such as figure 1 As shown, the sonar PWM pulse width modulation transmitting circuit of the present invention processes the input signal source signal and outputs it to the transducer. The modulation and transmitting circuit supplies power, including a power amplifier circuit 100, a low-pass filter circuit 200 and a matching circuit 300, and the power amplifier circuit 100, the low-pass filter circuit 200 and the matching circuit 300 are sequentially connected in series.

[0024] Among them, such as Figure 2-3 As shown, the power amplifying circuit 100 includes an SA12 power amplifier N1, and the SA12 power ...

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Abstract

The invention relates to a sonar PMW transmitting circuit. The sonar PMW transmitting circuit processes input signal source signals and then outputs the processed signal source signals to an energy converter. The frequency of the signal source signals ranges from 6 kHz to 9 kHz. A power source supplies power to the sonar PMW transmitting circuit. The sonar PMW transmitting circuit comprise a power amplifying circuit, a lowpass filtering circuit and a matching circuit, and the power amplifying circuit, the lowpass filtering circuit and the matching circuit are connected in series in sequence. An SA12 power amplifier adopted by the sonar PMW transmitting circuit is a PWM power amplifier, analog signals are converted into switching signals with an adjustable duty ratio, continuously variable filtered output level can be obtained just by changing the duty ratio of the signals, and therefore the working efficiency of the PWM power amplifier is greatly higher than that of a purely linear power amplifier. The sonar PMW transmitting circuit can transmit coded phase-modulated signals of various frequencies, well restrain reverberation, resist interference and complete tactic communication contact work.

Description

technical field [0001] The invention relates to a sonar transmitting circuit, in particular to a sonar PWM pulse width modulation transmitting circuit. Background technique [0002] Sonar is a device that uses the propagation characteristics of sound waves underwater to complete underwater target detection and communication tasks through electro-acoustic conversion and signal processing. The sonar transmitting circuit generates electrical signals, which are then converted into acoustic signals and radiated by the transmitting transducer placed in the water. When the sound wave propagates in water and encounters an object, a reflection signal will be generated. According to the round-trip time of the sound wave and its propagation speed in the water in the measured area, the straight-line distance from the transducer to the reflection target can be detected. [0003] Reverberation is the superposition of many weak sound waves emitted by sonar scattered on the sea surface, se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/524H03K7/08
CPCG01S7/524H03K7/08
Inventor 李金保朱渝宏
Owner HAIYING ENTERPRISE GROUP
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