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Broadband instantaneous frequency measuring and tracking device

A technology of instantaneous frequency and tracking devices, applied in frequency measurement devices, radio wave measurement systems, instruments, etc., can solve the problems of increasing frequency switching time and difficulty in meeting requirements, and meet the requirements of reducing ADC sampling rate, large input bandwidth, The effect of low hardware complexity

Active Publication Date: 2020-08-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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Problems solved by technology

This process will obviously increase the frequency switching time, which is difficult to meet the requirements for systems with frequency-agile characteristics

Method used

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  • Broadband instantaneous frequency measuring and tracking device

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Embodiment

[0030] figure 1 It is a principle diagram of a broadband instantaneous frequency measurement and tracking device of the present invention.

[0031] In this example, if figure 1 As shown, a wideband instantaneous frequency measurement and tracking device of the present invention includes: an instantaneous frequency measurement unit, a wave detection unit, an FPGA and a frequency-agile unit;

[0032] In this embodiment, the frequency measurement unit and the frequency synthesis unit can be integrated on a 3U board, so that it can work as a separate module, and can also be connected to the control board and the radar target simulator through a standard CPCI socket. Other modules work together to realize the concept of modular component design.

[0033] Instantaneous frequency measurement unit, including automatic gain power control module, multi-stage frequency divider, high-speed comparator and TDC time measurement unit;

[0034] When the signal under test is input to the ins...

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Abstract

The invention discloses a broadband instantaneous frequency measuring and tracking device, which takes an FPGA chip as a control core, realizes broadband signal input and instantaneous frequency measurement through an instantaneous frequency measurement unit of a multistage frequency division structure, and then process a measurement result of the instantaneous frequency measurement unit by an FPGA to generate a high-speed digital signal, wherein the high-speed digital signal is configured to a frequency agility unit, and the frequency agility unit outputs an analog signal with the same carrier frequency as the input signal by adopting different tracking modes according to the frequency of the input signal, so that the functions of rapid frequency measurement and tracking are realized.

Description

technical field [0001] The invention belongs to the technical field of frequency measurement and tracking, and more specifically relates to a broadband instantaneous frequency measurement and tracking device. Background technique [0002] In recent years, with the continuous development of radar technology, radar signals have developed from a traditional single system to complex signals with characteristics such as broadband, multi-system, and frequency agility. This also puts forward higher requirements for the development of radar target simulators. That is, it can process a variety of modulation signals in real time and quickly generate corresponding echo signals according to requirements. [0003] The real-time and accurate measurement of the broadband carrier signal frequency is the primary task of the radar target simulator. Only by quickly and accurately measuring the carrier frequency of the radar signal can further work such as signal sorting, baseband signal proces...

Claims

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Application Information

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IPC IPC(8): G01S7/40G01R23/02
CPCG01S7/4052G01R23/02Y02D30/70
Inventor 曾浩田雨何昊王猛蒋俊郭连平叶芃
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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