Research on technical solutions for digital signal processing to enhance the reception quality of air defense radar systems
DOI:
https://doi.org/10.54939/1859-1043.j.mst.102.2025.60-67Keywords:
Digital signal procesing; Linear frequency modulation; CIC filter; FIR filter.Abstract
The paper presents the signal processing algorithm, hardware design solution, and software development of the digital signal processing module for linear frequency modulated signals to improve the signal-to-noise ratio and reduce computational overload in the system. The proposed signal processing algorithm performs direct analog-to-digital conversion of two quadrature channels, downsampling filtering, optimization filtering, and signal correlation compression filtering. The selected functional components feature several advantages such as high gain, high speed, and ready availability in the market. The hardware design and software development were carried out following a survey–simulation–prototype process, ensuring high logical coherence and systematic integration. The final product has been successfully validated on both test benches and radar systems.
References
[1]. Vũ Chí Thanh, Bùi Chí Thanh, Nguyễn Ngọc Quang, Trần Văn Ánh, Nguyễn Văn Trà, Đặng Quốc Tiến, “Ảnh hưởng của tham số cấu trúc bộ lọc cic đến đặc tính tín hiệu đầu ra hệ thống giải điều chế tín hiệu ra đa” Tạp chí Nghiên cứu KH&CN quân sự, Số Đặc san Viện Ra đa, No.8, tr. 95-102, (2021) (in Vietnamese).
[2]. Alexander Miczo, “Digital Logic Testing and Simulation, Second Edition”, A John wiley & sons, INC., Publication (2003).
[3]. D. G. Elliott, M. Stumm, W. M. Snelgrove, C. Cojocaru, and R. McKenzie, “Computational RAM: Implementing Processors in Memory,” IEEE Design and Test of Compulers, Vol. 16, No.1, pp. 3241, (1999).
[4]. G. M Hatema, J. W Abdul Sadahb, T. R. Saeedc, “Comparative Study of Various CFAR Algorithms for Non-Homogenous Environments”, Materials Science and Engineering, No. 433. (2018).
[5]. John C. Koob, Raymond J. Sung, Tyler L. Brandon, Daniel, A. Leder, Duncan G. Elliott, Bruce F. Cockbum, “Design of a 3D Fully-Depleted SOI Computational RAM”, ESSCIRC 2002, Florence, Italy, pp. C-149, (2002).
[6]. Mitra, S, “Digital Signal Processing, A computer-Based Approach”, New York, pp. 885, (2011).
[7]. Reda Bekhakhecha, Mourad Barkat, “Simple PN Synchronization using the OS-CFAR Algorithm”, International Workshop on Advanced Control, IWAC2014, Guelma, Algeria, (2014).
