Accurate positioning method based on echo coherence effect

A technology of precise positioning and coherence effect, which is applied in earth-moving drilling, mining equipment, mining equipment, etc., can solve the problem of large positioning ambiguity of underground personnel positioning technology, and can solve the problem of large positioning ambiguity, reduce positioning ambiguity, The effect of improving positioning accuracy

Active Publication Date: 2012-06-20
太原海斯特电子有限公司
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Problems solved by technology

[0003] In order to solve the problem of large positioning ambiguity in existing underground personnel positio

Method used

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  • Accurate positioning method based on echo coherence effect
  • Accurate positioning method based on echo coherence effect
  • Accurate positioning method based on echo coherence effect

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Embodiment Construction

[0014] A precise positioning method based on the echo coherence effect, which is realized by the following steps:

[0015] (1) Design a detection waveform with good autocorrelation characteristics, and implant the detection waveform into the identification sensor and identification card of the underground personnel positioning system;

[0016] (2) The identification sensor periodically sends a call signal to the identification card carried by the underground personnel. After receiving the call signal, the identification card sends an echo signal containing useful information and detection waveforms to the identification sensor;

[0017] (3) On the one hand, the echo signal received by the identification sensor enters the main control single-chip microcomputer of the identification sensor for processing, and the main control single-chip microcomputer extracts the useful information in the echo signal; Lines are input to the coherent receiver, and the coherent receiver continuou...

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Abstract

The invention relates to the movable target positioning technology, in particular to an accurate positioning method based on the echo coherence effect, and solves the problem that the conventional underground personnel positioning technology has a high positioning ambiguity. The method comprises the following steps: (1), a detection waveform with a favorable self-correlation performance is designed; (2), an identification sensor sends a calling signal to an identification card carried by underground personnel periodically, and the identification card sends an echo signal to the identification sensor; (3), a coherence receiver receives the echo signal while moving unceasingly, and the detection waveform in the echo signal completely coincides with the detection waveform input in the coherence receiver when the coherence receiver moves to a position where the round-trip-delay of the echo signal is a specific value T; and (4), and the distance L between the identification sensor and the identification card is calculated out according to the round-trip-delay T. The method has the advantage that the problem that conventional underground personnel positioning technology has a high positioning ambiguity is solved, so as to be suitable for underground personnel positioning in a coal mine.

Description

technical field [0001] The invention relates to a moving target positioning technology, in particular to a precise positioning method based on echo coherence effect. Background technique [0002] The underground personnel positioning system has been applied in many coal mining enterprises. However, the current positioning system is only roughly partitioned and does not have the function of precise positioning, that is, the system can only judge that the cardholder is currently within the effective receiving range of the identification sensor according to which identification sensor receives the echo signal of the identification card , without being able to determine the specific location of the cardholder within the area. The radius of action of the identification sensor is usually more than 100 meters, and it is still growing, so there is a lot of ambiguity in the current partition positioning method. The ultimate goal of the underground personnel positioning system is to...

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Application Information

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IPC IPC(8): E21F17/18
Inventor 魏计林赵宝峰张天兴
Owner 太原海斯特电子有限公司
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