A Signal Acquisition Method Based on Multi-Sample Serial Fast Fourier Transform in High Dynamic and Low SNR Environment

被引：0
|
作者：
Chen Y. [1 ]
Dong B. [1 ]
Li H. [1 ]
Cai Y. [1 ]
机构：
[1] National Key Laboratory of Communication, University of Electronic Science and Technology of China, Chengdu
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2021年 / 43卷 / 06期
关键词：
High dynamic; Low Signal-to-Noise Ratio(SNR); Multi-sample Serial Fast Fourier Transform(MS-FFT); Signal acquisition;
D O I：
10.11999/JEIT200149
中图分类号：
学科分类号：
摘要：
Hypersonic technology is the development trend of space vehicles in the future. It also poses new challenges for the fast acquire capability of communication platforms in ultra-high dynamic and low signal-to-noise ratio environments. To overcome the limitation of the classic acquisition algorithm affected by frequency offset, a signal acquisition algorithm based on Multi-sample Serial Fast Fourier Transform (MS-FFT) is proposed. The proposed algorithm serially executes the FFT of multiple samples and runs the peak searching after non-coherent combining to obtain the acquire result. Without increasing the complexity, the influence of frequency offset on the acquisition performance is avoided. By deriving the theoretical formula of the Peak Signal-to-Noise Ratio (PSNR), it is proved that the frequency offset adaptation range of MS-FFT depends on the sampling rate and can be larger than the classical algorithm with the continuous improvement of the sampling capability of digital-analog conversion devices. Finally, the correctness of the above theoretical derivation is verified by simulation, and it is proved that the proposed algorithm is more suitable for the application scenarios of ultra-high dynamic environment. © 2021, Science Press. All right reserved.
引用
收藏
页码：1691 / 1697
页数：6
相关论文
共 16 条
  • [1] SHEN Zhiqiang, MENG Lingjie, Requirements and strategy analysis of TT& C used for ultrasonic speed aircraft, Aerospace Electronic Warfare, 26, 2, pp. 31-34, (2010)
  • [2] PAN Zhongxian, A study on signals acquisition method of high dynamic vehicles, pp. 29-30, (2014)
  • [3] KAY S M., Fundamentals of Statistical Signal Processing: Estimation Theory, pp. 157-168, (1993)
  • [4] DIEZ J, PANTALEON C, VIELVA L, Et al., A simple expression for the optimization of spread-spectrum code acquisition detectors operating in the presence of carrier-frequency offset, IEEE Transactions on Communications, 52, 4, pp. 550-552, (2004)
  • [5] ZHU Wuyong, Research and FPGA implementation on synchronization technology of spread spectrum communication system under high dynamics, pp. 30-38, (2019)
  • [6] LIU Chang, ZHANG Jun, ZHU Yanbo, Et al., Analysis and optimization of PMF-FFT acquisition algorithm for high-dynamic GPS signal, 2011 IEEE 5th International Conference on Cybernetics and Intelligent Systems (CIS), pp. 185-189, (2011)
  • [7] YANG Qinbiao, WANG Zulin, HUANG Qin, Et al., Folded PMF-FFT fast acquisition method for high dynamic scenarios, Systems Engineering and Electronics, 38, 8, pp. 1723-1729, (2016)
  • [8] WANG Kai, WU Bin, WANG Bo, An improved PMF-FFT spread spectrum signal acquisition algorithm based on compressed sensing, Telecommunication Engineering, 58, 6, pp. 661-667, (2018)
  • [9] LU Yongcai, ZONG Zhulin, HE Chun, Low-resource and efficient parallel frequency search method for GNSS receiver, 2010 International Conference on Computational Problem-Solving (ICCP), pp. 136-140, (2010)
  • [10] PAN Yi, ZHANG Tianqi, ZHANG Gang, Et al., A novel acquisition algorithm based on PMF-apFFT for BOC modulated signals, IEEE Access, 7, pp. 46686-46694, (2019)
12