A panoramic frequency high-speed scanning method and device
A high-speed scanning and frequency technology, applied in the fields of signal and information processing and security inspection, can solve the problems of frequency scanning speed discount, difficult spectrum analysis application requirements, and frequency scanning speed reduction of frequency scanning equipment, and achieve high resolution and resolution. rate effect
Active Publication Date: 2021-11-12
北京嘉普之光科技有限公司
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Problems solved by technology
If the additional overhead of the frequency band step overlap ratio, control and stabilization time, etc. are considered, the frequency sweep speed will be greatly reduced, and if the spectrum resolution capability of 100Hz or even higher precision is to be achieved, the frequency sweep speed of the frequency sweep equipment will be further reduced. Proportionately decreased significantly
Therefore, the traditional frequency scanning method is difficult to achieve high-speed spectrum scanning under the premise of high resolution and transient continuous time-frequency characteristics, and it is difficult to better meet the needs of spectrum analysis applications in different application scenarios
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[0043] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0044] The present application discloses a panoramic frequency high-speed scanning method and device. The method and device are specifically a panoramic frequency high-speed scanning method and device capable of maintaining continuous time-frequency characteristics, that is, under the premise of maintaining time-frequency continuous characteristics, the High-resolution, ultra-high-speed spectrum scanning.
[0045] see figure 1 The flow chart of the panoramic frequency high-speed sc...
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The present application discloses a panoramic frequency high-speed scanning method and device. When performing spectrum scanning, the method and device control the voltage-controlled oscillator to generate a frequency-sweeping local oscillator signal with continuous frequency conversion, and mix the frequency-sweeping local oscillator signal with the input signal. After mixing, the output is sent to the analog-to-digital converter, and the analog-to-digital converter performs analog-to-digital conversion processing on the sampled signal and then sends it to the frequency sweep restoration operator, and finally the frequency sweep restoration operator restores the obtained signal to the original input The content of a specific frequency point corresponding to the signal. Therefore, the present application realizes a panoramic frequency high-speed scanning method with continuous time-frequency feature preservation ability through continuous spectrum scanning and spectrum restoration based on frequency sweep restoration operator, which can realize High-resolution, ultra-high-speed spectrum scanning.
Description
technical field [0001] The present application belongs to the technical fields of signal and information processing and safety inspection, and in particular relates to a panoramic frequency high-speed scanning method and device. Background technique [0002] Frequency scanning refers to fixing the magnetic field, changing the frequency of radio frequency or magnetic field modulation slowly, and obtaining the required resonance spectrum through the resonance range. [0003] Traditional frequency scanning is carried out by time-sharing and section-by-section. If a spectrum resolution of 1kHz is to be achieved, the frequency scanning device needs to stay at the target frequency for at least 10 -3 Second. Assuming that the instantaneous bandwidth of the receiving device is 80MHz, the maximum scanning speed of the frequency scanning device will not exceed 80GHz. If the additional overhead of the frequency band step overlap ratio, control and stabilization time, etc. are consid...
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IPC IPC(8): G01R23/16
CPCG01R23/16
Inventor 张巨李世鹏张磊隗松
Owner 北京嘉普之光科技有限公司