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Spread spectrum coding detection signal transmitting system

A technology of spread spectrum coding and signal detection, which is applied in the transmission system, electrical components, etc., can solve the problems of reducing the detection signal-to-noise ratio, unfavorable electrical response signal detection, and the difficulty of high-power detection in signal power amplification circuits, etc., to overcome The effect of single transmission signal and high power transmission

Active Publication Date: 2017-03-29
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1
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Problems solved by technology

For the spread spectrum coding detection method, the frequency range of the detection signal is wide, including signals in multiple frequency bands of low frequency and high frequency, and the transmitted signal contains analog signal waveforms such as sine waves, using traditional signal power amplifier circuits or drivers It is difficult for the inverter circuit to achieve the purpose of high-power detection, which reduces the signal-to-noise ratio of detection and is not conducive to the detection of ground electrical response signals

Method used

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  • Spread spectrum coding detection signal transmitting system

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] The system of the present invention mainly includes a power supply unit 1, an external console unit 2, a signal processing center unit 3, a signal generation unit 4, a signal modulation unit 5, a drive circuit unit 6, an inverter circuit unit 7, and an excitation waveform demodulation circuit unit 8 Eight unit system. Such as figure 1As shown, the output end of the power supply unit 1 is connected to the power supply input end of the external console unit 2, the signal processing center unit 3, the signal generation unit 4, the signal modulation unit 5, the drive circuit unit 6, and the inverter circuit unit 7 Connected, using storage battery or generator, after voltage conversion, rectification, filtering to provide power to the entire launch system; the output of the external console unit 2 is connected to the input of the signal proc...

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Abstract

The invention provides a spread spectrum coding detection signal transmitting system mainly comprising the following eight unit systems: a power supply unit (1), an external console unit (2), a signal processing center unit (3), a signal generating unit (4), a signal modulation unit (5), a driving circuit unit (6), an inverter circuit unit (7) and an excitation waveform demodulation circuit unit (8). The spread spectrum coding detection signal transmitting system can realize the high power transmission of a variety of single frequency or spread spectrum coding detection signals by performing time pulse code modulation on analog detection signals.

Description

technical field [0001] The present invention relates to a spread spectrum coding detection signal transmitting system, in particular to a spread spectrum coding detection signal transmitting system used in the field of geophysical exploration. Background technique [0002] Frequency domain electromagnetic prospecting is an important part of geophysical prospecting technology, and plays an important role in geological prospecting in recent years. It inverts the distribution structure of the underground medium according to the close relationship between the penetration depth of the electromagnetic signal in the ground, the conductivity of the underground medium, and the frequency of the electromagnetic wave used. Therefore, the frequency domain electromagnetic method needs to obtain detection results of multiple frequencies. [0003] Electromagnetic methods for frequency domain exploration mainly include: frequency conversion method, odd harmonic method, dual frequency current...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04H04B1/69
CPCH04B1/04H04B1/69H04B2001/0491
Inventor 张来福杨虹刘国强李士强李艳红吴明锋田贇郝丽花郭婷王志鹏芦竹茂
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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