Volume 1 Issue 3
Sep.  2012
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Citation:

Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar

  • Received Date: 2012-07-23
    Accepted Date: 2012-09-03
    Fund Project:

    null

  • To resolve the problem of sampling speed and real-time continuous mass storage in large instantaneous bandwidth radar signal direct Intermediate Frequency (IF) sampling, a wideband radar intermediate frequency signal acquisition and real-time storage system is developed in this paper. Firstly, according to bandpass signals alias-free sampling theorem, the sampling frequency is determined. And then the digital quadrature demodulation, buffer and high speed real-time continuous mass storage design scheme is proposed. Based on chassis server platform, this system uses QDRII SRAM as the buffer storage, and adopts PCIe to be the data transmission channel. It is verified in a phased array radar experimental system that this system makes a good performance and gives a feasible schema for wideband radar data acquisition.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar

    Corresponding author:
  • 1. (ATR National Defense Science and Technology Key Lab, National University of Defense Technology, Changsha 410073, China)
Fund Project:  null

Abstract: To resolve the problem of sampling speed and real-time continuous mass storage in large instantaneous bandwidth radar signal direct Intermediate Frequency (IF) sampling, a wideband radar intermediate frequency signal acquisition and real-time storage system is developed in this paper. Firstly, according to bandpass signals alias-free sampling theorem, the sampling frequency is determined. And then the digital quadrature demodulation, buffer and high speed real-time continuous mass storage design scheme is proposed. Based on chassis server platform, this system uses QDRII SRAM as the buffer storage, and adopts PCIe to be the data transmission channel. It is verified in a phased array radar experimental system that this system makes a good performance and gives a feasible schema for wideband radar data acquisition.

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