Method and system for measuring nanosecond ultra-narrow pulse
A technology of ultra-narrow pulse and measurement system, applied in the direction of frequency measurement device, frequency to pulse sequence conversion, etc., can solve the problems of large data volume, difficult data processing, difficult pulse capture, etc., achieve low cost, improve execution efficiency, Good real-time and reliable effect
Inactive Publication Date: 2012-08-01
CHONGQING UNIV
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[0007] The technical problem to be solved by the present invention is: In order to overcome the problems of large amount of sampled data, difficult data processing, and difficulty in pulse capture in the prior art when measuring nanosecond narrow pulse signals, the present invention proposes a nanosecond narrow pulse measurement method with high-speed As the measurement and control part of the system, the pulse measurement module and FPGA control module view the measurement results and set the system working parameters through the human-computer interaction module, and save the measurement results in the form of files
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[0015] The implementation of the present invention will be described in detail below with reference to the accompanying drawings and specific examples.
[0016] figure 1 Shown is the overall structural block diagram of the nanosecond ultra-narrow pulse measurement system of the present invention. The system includes a high-speed pulse measurement module, an FPGA control module, and human-computer interaction modules such as a PS / 2 keyboard, a liquid crystal display, and an Ethernet interface. The measurement module includes 3-way high-speed digital-to-analog converter (DAC), resistor divider network, ultra-high-speed emitter-coupled logic (ECL) comparator array, and ultra-high-speed ECL flip-flop array. Two high-speed DACs provide upper and lower , the lower limit reference voltage, the resistance voltage divider network performs multi-level network voltage division within the upper and lower limit reference voltage ranges, and provides a reference comparison voltage for each ...
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The invention provides a method and system for measuring nanosecond ultra-narrow pulse, which relates to the field of signal detection. The system mainly comprises a high-speed pulse measuring module, a field programmable gate array (FPGA) control module and a human-computer interaction module. According to the size of a programmable time sheet and different measuring modes, a maximum pulse amplitude and the quantity of pulses surpassing a certain set comparison threshold value in each time sheet are detected. The high-speed characteristic of the FPGA is utilized, a software algorithm which has high time consumption is realized by using hardware, the executing efficiency of a program is increased, high-speed processing capability is ensured, and high instantaneity and reliability are achieved.
Description
technical field [0001] The invention belongs to the field of signal detection, and in particular relates to a novel nanosecond-level ultra-narrow pulse measurement method and system. Background technique [0002] Narrow pulse signal measurement has a wide range of applications and requirements in the fields of communication, navigation, electronic countermeasures, and radar. In nuclear reactor decay, high-voltage discharge detection, and noise processing, it is also necessary to obtain relevant information about narrow pulse signals to achieve effective control of the system. At present, most of the research on narrow pulse measurement systems is focused on pulse signals of more than ten to tens of nanoseconds, and there are relatively few studies on narrow pulse detection of several nanoseconds. A technical problem. [0003] There are two main solutions for traditional pulse signal measurement: [0004] 1) AD sampling scheme. In this scheme, the pulse signal is sampled b...
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IPC IPC(8): G01R23/10
Inventor 张玲林英撑任勇何伟孙建赵海李经章黄科
Owner CHONGQING UNIV