Panoramic frequency high-speed scanning method and device thereof

Abstract

The invention discloses a panoramic frequency high-speed scanning method and a device thereof, and the method and the device control a voltage-controlled oscillator to generate a frequency sweep local oscillation signal with continuous frequency conversion during frequency spectrum scanning, carry out the frequency mixing of the frequency sweep local oscillation signal and an input signal in a frequency mixer, and output the mixed signal to an analog-to-digital converter, the analog-to-digital converter carries out analog-to-digital conversion processing on the sampling signal and then transmits the sampling signal to the frequency-sweep recovery operator, and finally the frequency-sweep recovery operator recovers the obtained signal to the content of a specific frequency point corresponding to the original input signal. Therefore, through continuous frequency spectrum scanning and frequency spectrum recovery based on a frequency scanning recovery operator, a panoramic frequency high-speed scanning mode with a continuous time-frequency feature keeping capability is realized, and high-resolution and ultra-high-speed frequency spectrum scanning can be realized on the premise of keeping time-frequency continuous features.

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...

AI Technical Summary

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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