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多功能中层-电离层探测系统的设计与初步结果

Design of Multifunctional Mesosphere-Ionosphere Sounding System and Preliminary Results.

作者信息

Liu Tongxin, Yang Guobin, Zhao Zhengyu, Liu Yi, Zhou Chen, Jiang Chunhua, Ni Binbin, Hu Yaogai, Zhu Peng

机构信息

School of Electronic Information, Wuhan University, Wuhan 430072, China.

Institute of Space Science and Applied Technology, Harbin Institute of Technology, Shenzhen 518000, China.

出版信息

Sensors (Basel). 2020 May 7;20(9):2664. doi: 10.3390/s20092664.

DOI:10.3390/s20092664
PMID:32392724
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7249216/
Abstract

This paper describes a novel sounding system for which the functions of the medium frequency (MF) radar and the ionosonde are integrated on the same hardware platform and antenna structure, namely the middle atmosphere-ionosphere (MAI) system. Unlike the common MF radar, MAI system adopts the pseudo-random (PRN) phase-coded modulation technology, which breaks the limitation of the traditional monopulse mode. Through the pulse compression, only a small peak power is needed to achieve the signal-to-noise ratio (SNR) requirement. The excellent anti-jamming performance is also very suitable for the ionospheric sounding. One transmitting and six receiving modes are adopted for the MF sounding. While neglecting the structure of the T/R switches, the coupling interference between the transmitter and the receiver may also be avoided. Moreover, by employing a miniaturized antenna array composed of progressive-wave antennas for the MF receiving and ionospheric sounding, the MAI system takes account of the requirements of the inversion algorithms of MF radar and the large bandwidth need for the ionospheric sounding concurrently. Such an antenna structure can also greatly simplify the system structure and minimize the difficulty of deployment. The experiments verified the availability of the system scheme and its engineering application significance. Through further analysis of the sounding data, the wind field of the mesosphere, the electron density of D layer and electron density profile from layers E to F were obtained at the identical location. The capability of MAI system can play an important role in studying the interaction and coupling mechanism between the mesosphere and ionosphere.

摘要

本文描述了一种新型探测系统，即中高层大气-电离层（MAI）系统，在该系统中，中频（MF）雷达和电离层探测仪的功能集成在同一硬件平台和天线结构上。与普通的MF雷达不同，MAI系统采用伪随机（PRN）相位编码调制技术，突破了传统单脉冲模式的限制。通过脉冲压缩，只需较小的峰值功率就能满足信噪比（SNR）要求。其出色的抗干扰性能也非常适合电离层探测。MF探测采用一发六收模式。在忽略收发开关结构的情况下，还可避免发射机与接收机之间的耦合干扰。此外，MAI系统采用由行波天线组成的小型化天线阵列进行MF接收和电离层探测，兼顾了MF雷达反演算法的要求和电离层探测所需的大带宽。这种天线结构还可大大简化系统结构，降低部署难度。实验验证了该系统方案的可行性及其工程应用价值。通过对探测数据的进一步分析，在同一地点获得了中间层风场、D层电子密度以及E层至F层的电子密度剖面。MAI系统的性能在研究中间层与电离层之间的相互作用和耦合机制方面可发挥重要作用。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/fc2f408c9f7c/sensors-20-02664-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/c6e98060c768/sensors-20-02664-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/9037684b2801/sensors-20-02664-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/8bcb7903487f/sensors-20-02664-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/887e5b50ba29/sensors-20-02664-g011a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/de7622ccff0b/sensors-20-02664-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bfb/7249216/bd39167426f9/sensors-20-02664-g013.jpg
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本文引用的文献

1
A Novel Ionospheric Sounding Network Based on Complete Complementary Code and Its Application.基于完全互补码的新型电离层探测网络及其应用。
Sensors (Basel). 2019 Feb 14;19(4):779. doi: 10.3390/s19040779.
2
Wuhan Ionospheric Oblique Backscattering Sounding System and Its Applications-A Review.武汉电离层斜向返回散射探测系统及其应用——综述
Sensors (Basel). 2017 Jun 18;17(6):1430. doi: 10.3390/s17061430.