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A target positioning method and device based on continuous transmission of frequency modulation signals

A technology of target positioning and frequency modulation signal, which is applied in the beacon system using ultrasonic/sonic/infrasonic waves, etc., can solve the problems of long detection time, slow pulse detection response speed, low measurement accuracy, etc., and achieves strong device feasibility. , the effect of high integration and powerful computing power

Active Publication Date: 2017-08-29
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0005] However, there are several problems with the pulse-echo method: First, the pulse-echo method uses time-domain estimation for the existing amplitude-based estimation (near-field blind zone), and the measurement accuracy is not high due to noise interference.
Secondly, using simplex detection, the time required for detection is longer, and the reflection speed of pulse detection is slower

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  • A target positioning method and device based on continuous transmission of frequency modulation signals
  • A target positioning method and device based on continuous transmission of frequency modulation signals
  • A target positioning method and device based on continuous transmission of frequency modulation signals

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Embodiment Construction

[0055] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto.

[0056] Such as image 3 , Figure 4 As shown, the target positioning device mainly includes an operation module, a control module, a transmitting module, a receiving module, a processing module, and a display module. Control module and processing module can be realized with DSP chip (such as: the DSP chip of TI company TMS320VC5509A, the DSP32 / 32C of AT&T company, the MC96002 of Motorola company etc.); Such as: German USM33 series); Display module can adopt LCD display screen; The hardware structure block diagram of device of the present invention is as Figure 4 shown. The center distance between the transmitting and receiving probes is 4cm.

[0057] Such as figure 1 As shown, the main steps of using the acoustic echo signal to meas...

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Abstract

The invention discloses a target positioning method and apparatus based on continuous emitting frequency modulation signals. The target positioning apparatus comprises an operation module, a control module, an emission module, a reception module, a processing module and a display module, wherein the control module is connected with the emission module, the reception module, the processing module, the display module and the operation module. Signals are emitted continuously, so that a receiving end receives signals including emission signals and reflection signals. The signals received are analyzed to obtain target distance by using a target positioning method. The display module is connected with the control module and the processing module, and displays the target position parameters obtained by the processing module according to the instructions of the control module. The information quantity of signals received is increased and the information precision and accuracy are improved by prolonging emission time.

Description

technical field [0001] The invention relates to target positioning measurement technology, in particular to a target positioning method and device based on continuous transmission of frequency modulation signals. Background technique [0002] Ultrasonic distance measurement technology is a non-contact measurement technology with simple principle and easy implementation. It has been widely used in aerospace, military industry, petroleum, chemical industry, shipbuilding, transportation and other fields. With the wide range of applications, the performance requirements for ultrasonic ranging are also getting higher and higher. The principle of ultrasonic positioning is similar to the radio positioning system, but it is only applicable to a small range because of the large attenuation of ultrasonic waves in the air. The propagation distance of ultrasonic waves in the air is generally only tens of meters. The short-distance ultrasonic ranging system has been applied in practice...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S1/76
CPCG01S1/76
Inventor 胡诗玮宁更新
Owner SOUTH CHINA UNIV OF TECH
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