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### 基于MR-MWC系统的载频与DOA联合估计

1. 1.哈尔滨工程大学信息与通信工程学院，黑龙江 哈尔滨 150001
2.先进船舶通信与信息技术工业和信息化部重点实验室，黑龙江 哈尔滨 150001
3.哈尔科夫国立无线电电子大学，乌克兰 哈尔科夫 61166
• 收稿日期:2022-03-28 修回日期:2022-07-04 出版日期:2022-10-19
• 通讯作者:
• 戚连刚
• 作者简介:
• 国　强　男，1972年11月出生于黑龙江省哈尔滨市.现为哈尔滨工程大学教授、博士生导师，乌克兰工程院外籍院士.主要研究方向为电子对抗、雷达信号分选与识别.E-mail: guoqiang@hrbeu.edu.cn
李　沛　女，1996年6月出生于内蒙古乌兰察布市.现为哈尔滨工程大学硕士研究生.主要研究方向为阵列信号处理.E-mail: s320080051@hrbeu.edu.cn
戚连刚（通讯作者）　男，1990年1月出生于河北省邢台市. 现为哈尔滨工程大学预聘副教授.主要研究方向为自适应干扰抑制、阵列信号处理、智能信息处理.
• 基金资助:
• 国家重点研发计划 (2018YFE0206500); 国家自然科学基金面上项目 (62071140)

### Joint Estimation of Carrier Frequency and DOA Based on the MR-MWC System

GUO Qiang1,2, LI Pei1,2, XU Wei1,2, QI Lian-gang1,2(), Kaliuzhny Mykola1,3

1. 1.Dept. of Information and Communication Engineering，Harbin Engineering University of China，Harbin，Heilongjiang 150001，China
2.Key Laboratory of Advanced Marine Communication and InformationTechnology，Ministry of Industry and Information Technology，Harbin，Heilongjiang 150001，China
3.Kharkiv National University of Radio Electronics，Kharkiv 61166，Ukraine
• Received:2022-03-28 Revised:2022-07-04 Online:2022-10-19
• Corresponding author:
• QI Lian-gang

Abstract:

In view of the problems that the traditional Nyquist sampling generates huge data volume and the existing array compressed sampling systems have complex structures and large reconstruction operations, this paper proposes an array reception system based on an improved modulated wideband converter(MWC) of uniform linear array, which can directly perform carrier frequency and direction of arrival(DOA) estimation on the compressive sampling(CS) data of the received signal without reconstruction. The proposed system sets multiple MWC branches after the first antenna, and selects the periodic cyclic shift pseudo-random sequence as the mixing function, so that there is a fixed phase difference between the compressed sampled values of adjacent branches, and the subband index estimation can be obtained from the phase difference. The baseband frequency is estimated by FFT(Fast Fourier Transform) spectral line interpolation method, and the carrier frequency estimation of the received signal can be obtained when the two estimated values are combined. The rest of the array antennas are set as a single channel MWC structure, and the mixing function of each channel is the same as that in the first MWC branch of the first array antenna, which avoids the need for phase compensation and the resulting error in DOA estimation. The high-resolution multiple signal classification(MUSIC) algorithm can be directly used to complete DOA estimation on the CS data obtained from the first branch and other array antennas. The experimental simulation results show that the proposed system can estimate the carrier frequency and DOA parameters of the target from the compressed sampling data.