Pulse signal frequency measurer

Abstract

The invention discloses a pulse signal frequency measurer, and mainly solves the problems that an pulse signal frequency measurer in the prior art is easily affected by the precision of a hardware system and clutter interference, and the measurement accuracy is poor. The pulse signal frequency measurer comprises an A / D unit, a signal processing unit and an interface unit; the A / D sampling unit modulates an input intermediate-frequency pulse signal and sends the intermediate-frequency pulse signal to the signal processing unit for demodulation; the signal processing unit comprises a micro-processing module (1), an operation processing module (2), a frequency conversion control module (3), a data transmission module (4) and a monitoring module (5), the micro-processing module (1), the operation processing module (2), the frequency conversion control module (3), the data transmission module (4) and the monitoring module (5) are used for calculating the pulse frequency, pulse repetition frequency and pulse width information of the intermediate-frequency pulse signal and a frequency output value of an external frequency-hopping source and sending the pulse frequency, pulse repetition frequency and pulse width information of the intermediate-frequency pulse signal and the frequency output value of the external frequency-hopping source to the interface unit; the interface unit sends calculation results input by the signal processing unit to a display control unit of an external upper computer for use. The pulse signal frequency measurer has the advantages that the measurement of the pulse frequency is high in accuracy and faster in speed, and the pulse signal frequency measurer can be used for meteorological radar integrated test equipment.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a pulse signal frequency measuring device, which can be used for measuring pulse frequency, pulse repetition frequency and pulse width of pulse system radar. Background technique [0002] Measuring pulse frequency, pulse repetition frequency and pulse width of pulse system radar is a necessary link in radar manufacturing and testing. At present, the pulse repetition frequency and pulse width of the pulse system radar are mainly measured by counting the rising edge of the pulse after peak detection to obtain the pulse width and pulse period. The measurement of the pulse frequency is the frequency of the pulse signal obtained after measuring the cycle of the signal. [0003] When measuring with the above method, there will be the following deficiencies: [0004] Because the measurement of pulse frequency, pulse repetition frequency and pulse width is affe...

AI Technical Summary

Problems solved by technology

However, when this method measures narrow pulses, since the pulse contains less frequency information, the time to lock the frequency becomes longer, which makes the accuracy of the continuous wave generated by the frequency source worse, resulting in a slower measurement frequency.

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