同轨收发卫星雷达基线长度及杂波特性分析

doi:10.12305/j.issn.1001-506X.2023.08.24

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (8): 2498-2505.doi: 10.12305/j.issn.1001-506X.2023.08.24

同轨收发卫星雷达基线长度及杂波特性分析

倪萌钰, 陈辉, 王晓戈, 李槟槟, 张昭建

空军预警学院, 湖北武汉 430019

收稿日期:2022-01-17 出版日期:2023-07-25 发布日期:2023-08-03
通讯作者: 倪萌钰
作者简介:倪萌钰(1994—), 女, 博士研究生, 主要研究方向为阵列信号处理
陈辉(1974—), 男, 教授, 博士, 主要研究方向为空间谱估计、阵列信号处理
王晓戈(1996—), 男, 博士研究生, 主要研究方向为雷达抗干扰技术
李槟槟(1990—), 男, 讲师, 博士, 主要研究方向为阵列信号处理
张昭建(1989—), 男, 讲师, 博士, 主要研究方向为雷达抗干扰技术
基金资助:
国家自然科学基金青年项目(62001510);国家自然科学基金青年项目(6210593);空军预警学院托青工程项目(TQGC-2021-005)

Analysis of baseline length and clutter characteristic of co-orbital transceiver spaceborne radar

Mengyu NI, Hui CHEN, Xiaoge WANG, Binbin LI, Zhaojian ZHANG

Air Force Early Warning Academy, Wuhan 430019, China

Received:2022-01-17 Online:2023-07-25 Published:2023-08-03
Contact: Mengyu NI

摘要/Abstract

摘要：

针对同轨道星载收发分置雷达的杂波抑制问题, 分析了收发卫星基线长度和探测距离和的取值对是否存在探测相交区域的影响, 再针对某一距离和下接收卫星飞行方向与其波束指向间的夹角(即接收锥角与杂波多普勒频率的关系以及距离和与多普勒的关系)进行了分析, 最后在锥角余弦值同时包含正负值的基础上分析了存在基准收发卫星及两种辅助卫星情况下接收锥角余弦值为0时对应的多普勒频率。理论分析表明基线长度及距离和会影响探测区域的存在及锥角余弦值的取值, 并通过仿真验证了正确性, 可为后续基线长度的选择、同轨道星载收发雷达的运用等提供依据。

关键词: 星载雷达, 同飞行轨道, 基线长度, 杂波特性

Abstract:

In order to solve the problem of clutter suppression for co-orbital transceiver spaceborne radar, this paper firstly analyzes the influence of the baseline length of the transceiver radar and the isometric contour on the existence of the detection intersection area. Secondly, for a certain isometric contour, the relation between the receiving cone angle and the clutter Doppler frequency and the relation between the sum of the detection range and the clutter Doppler frequency is analyzed. Finally, based on the existence of both positive and negative values of the cosine of the receiving cone angle, the Doppler frequency is analyzed under the reference transceiver satellite and two auxiliary satellites when the cosine of the receiving cone angle is 0. Theoretical analysis shows that baseline length and isometric contour affect the existence of detection area and the value of cosine of receiving cone angle, and the correctness is verified by simulation test, which can provide a basis for the selection of the baseline length and the application of the co-orbital spaceborne transceiver radar.

Key words: spaceborne radar, co-orbit, baseline length, clutter characteristics

中图分类号:

TN911.7

倪萌钰, 陈辉, 王晓戈, 李槟槟, 张昭建. 同轨收发卫星雷达基线长度及杂波特性分析[J]. 系统工程与电子技术, 2023, 45(8): 2498-2505.

Mengyu NI, Hui CHEN, Xiaoge WANG, Binbin LI, Zhaojian ZHANG. Analysis of baseline length and clutter characteristic of co-orbital transceiver spaceborne radar[J]. Systems Engineering and Electronics, 2023, 45(8): 2498-2505.

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雷达仿真参数	数值
接收天线阵元数N	16
相干脉冲数K	16
带宽/MHz	5
发射峰值功率/kW	100
噪声系数/dB	3
主波束指向θ_EL0/(°)	90
主波束指向θ_AZ0/(°)	180

多普勒频率/接收	R	R₁	R₂
F_d1理论值	0.055 6	0.041 2	0.064 2
F_d1仿真值	0.055 6	0.040 0	0.063 9
差值绝对值	0.000 0	0.001 2	0.000 3
F_d2理论值	0.003 2	0.017 8	0.005 5
F_d2仿真值	0.003 3	0.019 0	0.005 3
差值绝对值	0.000 1	0.001 2	0.000 2
\|F_d2－F_d1\|理论值	0.058 8	0.059 0	0.058 7
\|F_d2－F_d1\|仿真值	0.058 9	0.059 0	0.058 6
差值绝对值	0.000 1	0.000 0	0.000 1

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同轨收发卫星雷达基线长度及杂波特性分析

Analysis of baseline length and clutter characteristic of co-orbital transceiver spaceborne radar

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