机动平台俯冲大斜视SAR脉冲重复频率设计

doi:10.3969/j.issn.1001-506X.2020.03.010

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (3): 575-581.doi: 10.3969/j.issn.1001-506X.2020.03.010

机动平台俯冲大斜视SAR脉冲重复频率设计

党彦锋^1,²(), 梁毅^1,^2,*(), 张罡^1,²(), 梁宇杰^1,²(), 张玉洪²()

1. 西安电子科技大学雷达信号处理国家重点实验室, 陕西西安 710071
2. 西安电子科技大学电子工程学院, 陕西西安 710071

收稿日期:2019-01-08 出版日期:2020-03-01 发布日期:2020-02-28
通讯作者: 梁毅 E-mail:yfdang1992@163.com;yliang@xidian.edu.cn;443734847@qq.com;liangjie05@163.com;yhzhang@xidian.edu.cn
作者简介:党彦锋(1992-),男,博士研究生,主要研究方向为SAR成像、实时信号处理。E-mail:yfdang1992@163.com|张罡(1994-),男,博士研究生,主要研究方向为弹载SAR成像、实时信号处理。E-mail:443734847@qq.com|梁宇杰(1996-),男,硕士研究生,主要研究方向为弹载SAR成像。E-mail:liangjie05@163.com|张玉洪(1958-),男,教授,博士,主要研究方向为雷达系统、空时处理。E-mail:yhzhang@xidian.edu.cn
基金资助:
国家自然科学基金(61971326)

Pulse repetition frequency design for diving highly squinted synthetic aperture radar mounted on maneuvering platform

Yanfeng DANG^1,²(), Yi LIANG^1,^2,*(), Gang ZHANG^1,²(), Yujie LIANG^1,²(), Yuhong ZHANG²()

1. National Key Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China
2. School of Electronic Engineering, Xidian University, Xi'an 710071, China

Received:2019-01-08 Online:2020-03-01 Published:2020-02-28
Contact: Yi LIANG E-mail:yfdang1992@163.com;yliang@xidian.edu.cn;443734847@qq.com;liangjie05@163.com;yhzhang@xidian.edu.cn
Supported by:
国家自然科学基金(61971326)

摘要/Abstract

摘要：

在机动平台俯冲段大斜视合成孔径雷达(synthetic aperture radar, SAR)成像中,传统脉冲重复频率(pulse repetition frequency, PRF)设计方法存在下限值过高导致数据录取量增加,且PRF值无法根据高度变化实时调整的缺陷。针对上述问题,首先构建机动平台俯冲大斜视SAR成像模型;然后提出一种新的基于等距离环的方位带宽计算方法,得到考虑运动及系统误差情况下的PRF下限值;最后提出分高度段动态选取PRF的新方法,根据平台位置动态调整较少次数的PRF值即可实现波束覆盖区内回波数据录取,解决了PRF值无法随高度变化实时调整的难题。

关键词: 机动平台, 合成孔径雷达, 俯冲大斜视, 脉冲重复频率, 高度段

Abstract:

In diving highly squinted synthetic aperture radar (SAR) imaging, the traditional sequence design method of pulse repetition frequency (PRF) has the disadvantage that the lower limit value is too high to increase the data acquisition, and the PRF value cannot be adjusted in real time with the altitude of platform changing. In order to solve the above problems, a diving high squint imaging model mounted on the maneuvering platform is constructed firstly. Furthermore, the azimuth bandwidth calculation method based on equal-range rings is proposed to get the lower limit of PRF which takes motion and system error into consideration. Finally, the method of dynamic selection of PRF by dividing altitude segments is proposed, which can be adjusted dynamically according to the platform position. A few adjusting times of PRF value can realize the echo data acquisition in the beam coverage area, which solves the problem that PRF value cannot be adjusted in real time with the change of the altitude.

Key words: maneuvering platform, synthetic aperture radar (SAR), diving highly squinted, pulse repetition frequency (PRF), altitude segments

中图分类号:

10.3969/j.issn.1001-506X.2020.03.010

党彦锋, 梁毅, 张罡, 梁宇杰, 张玉洪. 机动平台俯冲大斜视SAR脉冲重复频率设计[J]. 系统工程与电子技术, 2020, 42(3): 575-581.

Yanfeng DANG, Yi LIANG, Gang ZHANG, Yujie LIANG, Yuhong ZHANG. Pulse repetition frequency design for diving highly squinted synthetic aperture radar mounted on maneuvering platform[J]. Systems Engineering and Electronics, 2020, 42(3): 575-581.

图/表 8

图1

图2

表1

图3

图4

图5

表2

表3

参考文献 29

1	JIANG S , WANG B N , XIANG M S , et al. Method for InSAR/INS navigation system based on interferogram matching[J]. IET Radar, Sonar & Navigation, 2018, 12 (9): 938- 944.
2	ZHONG Y M , GAO S S , LI W . A quaternion-based method for SINS/SAR integrated navigation system[J]. IEEE Trans.on Aerospace & Electronics Systems, 2012, 48 (1): 514- 524.
3	别博文, 孙路, 邢孟道, 等. 基于局部直角坐标和子区域处理的弹载SAR频域成像算法[J]. 电子与信息学报, 2018, 40 (8): 6- 13.
	BIE B W , SUN L , XING M D , et al. A frequency-domain algorithm based on local cartesian coordinate and subregion processing for missile-borne SAR imaging[J]. Journal of Electronics & Information Technology, 2018, 40 (8): 6- 13.
4	YANG L , ZHAO L , ZHOU S , et al. Spectrum-oriented FFBP algorithm in quasi-polar grid for SAR imaging on maneuvering platform[J]. IEEE Geoscience & Remote Sensing Letters, 2017, 14 (5): 724- 728.
5	TANG S Y , ZHANG L R , GUO P , et al. Acceleration model analyses and imaging algorithm for highly squinted airborne spotlight mode SAR with maneuvers[J]. IEEE Journal of Selected Topics in Applied Earth Observation and Remote Sensing, 2015, 8 (3): 1120- 1131.
6	CAMLICA S , GURBUZ A C , ARIKAN O . Autofocused spotlight SAR image reconstruction of off-grid sparse scenes[J]. IEEE Trans.on Aerospace and Electronic Systems, 2017, 53 (4): 1880- 1892. doi: 10.1109/TAES.2017.2675138
7	LI Z Y , XING M D , LIANG Y , et al. A frequency-domain imaging algorithm for highly squinted SAR mounted on maneuvering platforms with nonlinear trajectory[J]. IEEE Trans.on Geoscience and Remote Sensing, 2016, 54 (7): 4023- 4038. doi: 10.1109/TGRS.2016.2535391
8	DANG Y F , LIANG Y , BIE B W , et al. A range perturbation approach for correcting spatially variant range envelope in diving highly squinted SAR with nonlinear trajectory[J]. IEEE Geoscience & Remote Sensing Letters, 2018, 15 (6): 858- 862.
9	CHEN S , ZHANG S N , ZHAO H C . A new chirp scaling algorithm for highly squinted missile-borne SAR based on FrFT[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014, 8 (8): 3977- 3987.
10	李财品, 何明一. 地球同步轨道SAR凝视成像变脉冲重复频率技术[J]. 电子科技大学学报, 2016, 45 (6): 917- 922. doi: 10.3969/j.issn.1001-0548.2016.06.007
	LI C P , HE M Y . The technology of pulse repetition frequency variation for geosynchronous orbit SAR with staring imaging[J]. Journal of University of Electronic Science and Technology of China, 2016, 45 (6): 917- 922. doi: 10.3969/j.issn.1001-0548.2016.06.007
11	FU R Y , ZHANG D D , SUN Y H . Research of linear charging for repetition-frequency pulse power supply[J]. IEEE Trans.on Plasma Science, 2017, 45 (7): 1585- 1590. doi: 10.1109/TPS.2017.2706281
12	郑陶冶, 俞根苗. 弹载SAR脉冲重复频率设计研究[J]. 雷达科学与技术, 2010, 8 (3): 217- 222. doi: 10.3969/j.issn.1672-2337.2010.03.006
	ZHENG T Y , YU G M . Design method of pulse repetition frequency of missile-borne side-looking SAR[J]. Radar Science and Technology, 2010, 8 (3): 217- 222. doi: 10.3969/j.issn.1672-2337.2010.03.006
13	YIN W, YANG W F, DING Z G. Pulse repetition frequency design for geosynchronous SAR in ellipcial orbit[C]//Proc.of the IET International Radar Conference, 2015. DOI: 10.1049/cp.2015.1407.
14	PYNE B, RAVINDRA V. An improved pulse repetition frequency selection scheme for synthetic aperture radar[C]//Proc.of the 12th European Radar Conference, 2015: 257-260.
15	谢英华, 卢再奇, 周剑雄, 等. 弹载平台聚束SAR成像脉冲重复频率设计[J]. 系统工程与电子技术, 2010, 32 (11): 2294- 2298.
	XIE Y H , LU Z Q , ZHOU J X , et al. Design of pulse repetition frequency for missile-borne spotlight SAR imaging[J]. Systems Engineering and Electronics, 2010, 32 (11): 2294- 2298.
16	LI Y C , DENG H , QUAN Y H , et al. Sequence design for high squint spotlight SAR imaging on manoeuvring descending trajectory[J]. IET Radar, Sonar & Navigation, 2017, 11 (2): 219- 225.
17	党彦锋, 梁毅, 别博文, 等. 俯冲段大斜视SAR子孔径成像二维空变校正方法[J]. 电子与信息学报, 2018, 40 (11): 2621- 2629.
	DANG Y F , LIANG Y , BIE B W , et al. Two-dimension space-variance correction approach for diving highly squinted SAR imaging with sub-aperture[J]. Journal of Electronics & Information Technology, 2018, 40 (11): 2621- 2629.
18	李震宇, 梁毅, 邢孟道, 等. 一种俯冲段子孔径SAR大斜视成像及几何校正方法[J]. 电子与信息学报, 2015, 37 (8): 1814- 1820.
	LI Z Y , LIANG Y , XING M D , et al. New subaperture imaging algorithm and geometric correction method for high squint diving SAR based on equivalent squint model[J]. Journal of Electronics & Information Technology, 2015, 37 (8): 1814- 1820.
19	BIE B W , XING M D , XIA X G , et al. A frequency domain backprojection algorithm based on local cartesian coordinate and subregion range migration correction for high-squint SAR mounted on maneuvering platforms[J]. IEEE Trans.on Geoscience and Remote Sensing, 2018, 56 (12): 7086- 7101. doi: 10.1109/TGRS.2018.2848249
20	TORRES Y , PREMARATNE K , AMELUNG F , et al. An efficient polyphase filter-based resampling method for unifying the PRFs in SAR data[J]. IEEE Trans.on Geoscience and Remote Sensing, 2017, 55 (10): 5741- 5754. doi: 10.1109/TGRS.2017.2713600
21	SHU Y X , LIAO G S , YANG Z W . Design considerations of PRF for optimizing GMTI performance in azimuth multichannel SAR systems with HRWS imaging capability[J]. IEEE Trans.on Geoscience and Remote Sensing, 2014, 52 (4): 2048- 2063.
22	WU Y M , YU Z , XIAO P , et al. Suppression of azimuth ambiguities in spaceborne SAR images using spectral selection and extrapolation[J]. IEEE Trans.on Geoscience and Remote Sensing, 2018, 56 (10): 6134- 6147.
23	LIN M, YU Z, LI C S. Azimuth ambiguity suppression for spaceborne SAR based on PRF micro-variation[C]//Proc.of the IEEE International Geoscience and Remote Sensing Symposium, 2015: 1325-1328.
24	XU W , HUANG P P , ROBERT W , et al. Processing of multichannel sliding spotlight and TOPS synthetic aperture radar data[J]. IEEE Trans.on Geoscience and Remote Sensing, 2013, 51 (8): 4417- 4429. doi: 10.1109/TGRS.2013.2265306
25	ZENG T , LI Y H , DING Z G , et al. Subaperture approach based on azimuth-dependent range cell migration correction and azimuth focusing parameter equalization for maneuvering high-squint-mode SAR[J]. IEEE Trans.on Geoscience and Remote Sensing, 2015, 53 (12): 6718- 6734. doi: 10.1109/TGRS.2015.2447393
26	WANG C H , XU J W , LIAO G S , et al. A range ambiguity resolution approach for high-resolution and wide-swath SAR imaging using frequency diverse array[J]. IEEE Journal of Selected Topics in Signal Processing, 2017, 11 (2): 336- 346. doi: 10.1109/JSTSP.2016.2605064
27	KRIERER G, HUBER S, VILLANO M, et al. CEBRAS: cross elevation beam range ambiguity suppression for high-resolution wide-swath and MIMO-SAR imaging[C]//Proc.of the IEEE International Geoscience and Remote Sensing Symposium, 2015: 196-199.
28	VILLANO M , KRIERER G , MOREIRA A . Nadir echo removal in synthetic aperture radar via waveform diversity and dual-focus post processing[J]. IEEE Geoscience and Remote Sensing Letters, 2018, 15 (5): 719- 723. doi: 10.1109/LGRS.2018.2808196
29	YANG M D , ZHU D Y . Efficient space-variant motion compensation approach for ultra-high-resolution SAR based on subswath processing[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2018, 11 (6): 2090- 2103. doi: 10.1109/JSTARS.2018.2799601

参数	数值
载频/ GHz	16
脉冲宽度/μs	10
距离带宽MHz	80
水平波束宽度/(°)	4.5
俯仰波束宽度/(°)	5
距离向幅宽/km	2.5
平台高度范围/km	[30, 25]
收发保护时间/μs	2

斜距/km	PRF/Hz
[36, 46)	6 000
[46, 55)	4 900
[55, 60)	7 000
[60, 71)	6 000
≥71	5 000

斜距/km	PRF/Hz
[32, 46)	6 000
[46, 52)	5 000
[52, 60)	7 000
[60, 71)	6 000
≥71	5 000

[1]	苗添, 曾虹程, 王贺, 陈杰. 基于迭代阈值分割的星载SAR洪水区域快速提取[J]. 系统工程与电子技术, 2022, 44(9): 2760-2768.
[2]	王彩云, 吴钇达, 王佳宁, 马璐, 赵焕玥. 基于改进的CNN和数据增强的SAR目标识别[J]. 系统工程与电子技术, 2022, 44(8): 2483-2487.
[3]	傅东宁, 廖桂生, 黄岩, 张邦杰, 王幸. 基于图拉普拉斯嵌入的合成孔径雷达时变窄带干扰抑制算法[J]. 系统工程与电子技术, 2022, 44(6): 1846-1853.
[4]	盖明慧, 张苏, 孙卫天, 倪育德, 杨磊. 复数兼容全变分SAR目标结构特征增强[J]. 系统工程与电子技术, 2022, 44(6): 1862-1872.
[5]	徐安林, 张毓, 周峰. 基于Beta过程的高分辨ISAR成像[J]. 系统工程与电子技术, 2022, 44(6): 1873-1879.
[6]	纪朋徽, 代大海, 邢世其, 冯德军. 密集虚假运动目标生成方法[J]. 系统工程与电子技术, 2022, 44(5): 1502-1511.
[7]	刘丰恺, 黄大荣, 郭新荣, 冯存前. 基于吕氏分布的机动目标参数化平动补偿方法[J]. 系统工程与电子技术, 2022, 44(4): 1166-1173.
[8]	陈冬, 句彦伟. 基于语义分割实现的SAR图像舰船目标检测[J]. 系统工程与电子技术, 2022, 44(4): 1195-1201.
[9]	周晓玲, 张朝霞, 鲁雅, 王倩, 王琨琨. 基于改进R-FCN的SAR图像识别[J]. 系统工程与电子技术, 2022, 44(4): 1202-1209.
[10]	杨磊, 张苏, 盖明慧, 方澄. 高分辨SAR目标成像方向性结构特征增强[J]. 系统工程与电子技术, 2022, 44(3): 808-818.
[11]	王俊杰, 冯德军, 胡卫东. 基于时变材料的合成孔径雷达图像二维调制方法[J]. 系统工程与电子技术, 2022, 44(2): 455-462.
[12]	方澄, 李慧娟, 路稳, 宋玉蒙, 杨磊. 基于形态学自适应分块的高分辨SAR多特征增强算法[J]. 系统工程与电子技术, 2022, 44(2): 470-479.
[13]	雷禹, 冷祥光, 周晓艳, 孙忠镇, 计科峰. 基于改进ResNet网络的复数SAR图像舰船目标识别方法[J]. 系统工程与电子技术, 2022, 44(12): 3652-3660.
[14]	贾晓雅, 汪洪桥, 杨亚聃, 崔忠马, 熊斌. 基于YOLO框架的无锚框SAR图像舰船目标检测[J]. 系统工程与电子技术, 2022, 44(12): 3703-3709.
[15]	徐正, 巩光众, 罗运华, 李广德. 约束优化的空间变迹算法的旁瓣抑制应用[J]. 系统工程与电子技术, 2022, 44(11): 3298-3304.

机动平台俯冲大斜视SAR脉冲重复频率设计

Pulse repetition frequency design for diving highly squinted synthetic aperture radar mounted on maneuvering platform

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 29

相关文章 15

编辑推荐

Metrics

本文评价