系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (6): 1684-1692.doi: 10.12305/j.issn.1001-506X.2023.06.12

• 传感器与信号处理 • 上一篇    

雷达波形通用调制引擎设计

汪敏, 冯一伦, 蒋彦雯, 范红旗   

  1. 国防科技大学电子科学学院ATR国防科技重点实验室, 湖南 长沙 410073
  • 收稿日期:2021-10-25 出版日期:2023-05-25 发布日期:2023-06-01
  • 通讯作者: 范红旗
  • 作者简介:汪敏 (1993—), 男, 硕士研究生, 主要研究方向为雷达仿真系统设计
    冯一伦 (1995—), 男, 硕士研究生, 主要研究方向为阵列雷达波形设计
    蒋彦雯 (1990—), 女, 讲师, 博士, 主要研究方向为阵列雷达信号处理
    范红旗 (1978—), 男, 研究员, 博士, 主要研究方向为主动感知系统、目标跟踪、信息融合与智能导引

Design of general modulation engine for radar waveform

Min WANG, Yilun FENG, Yanwen JIANG, Hongqi FAN   

  1. National Key Laboratory of Science and Technology on ATR, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Received:2021-10-25 Online:2023-05-25 Published:2023-06-01
  • Contact: Hongqi FAN

摘要:

针对软件化雷达复杂调制波形高效灵活产生的问题, 以相干处理间隔为更新周期将复杂调制脉冲串抽象描述为波形矩阵, 提出一种调选分离的雷达波形产生方式, 降低了上位机的计算量以及到硬件的传输延迟。在此基础上, 设计了一种基于现场可编程门阵列(field programmble gate array, FPGA)的雷达波形通用调制引擎, 可实现波形产生与波形样式解耦、波形优化/选用与波形产生解耦。基于商用现货(commercial off-the-shelf, COTS)的系统测试表明, 通用调制引擎可灵活支持脉内任意调制、脉间波形捷变以及初相、频偏、幅度、重复间隔等脉间参数调制, 为软件化雷达波形产生与灵活运用提供设计参考。

关键词: 软件化雷达, 波形矩阵, 波形产生, 脉间调制, 波形捷变, 调制引擎, 现场可编程门阵列, 波形对抗

Abstract:

Aiming at the problem of the efficient and flexible generation of software radar complex modulation waveforms, the complex modulation pulse train is abstractly described as a waveform matrix with the coherent processing interval as the update period, and a radar waveform generation method that selects and separates is proposed, which reduce the amount of calculation of the host computer and the transmission delay to the hardware. On this basis, an field programmble gate array (FPGA)-based general-purpose modulation engine for radar waveforms is designed, which can realize the decoupling of waveform generation and waveform pattern, waveform optimization/selection and waveform generation decoupling. The system test based on commercial off-the-shelf (COTS) shows that the universal modulation engine can flexibly support arbitrary intra-pulse modulation, inter-pulse waveform agility, and inter-pulse parameter modulation such as phase, frequency deviation, amplitude, repetition interval, etc. Providing important design reference with flexible use to generate software radar waveforms.

Key words: software defined radar, wave matrix, waveform generation, inter-pulse modulation, waveform agility, modulation engine, field programmble gate array (FPGA), wave confrontation

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