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CUSTR——一种用于观测大气动力学和电离层等离子体不规则现象的甚高频相控阵雷达。

CUSTR- A VHF phased array radar for observation of atmospheric dynamics and ionospheric plasma irregularities.

作者信息

Nandakumar P, Siddiqui Jawad Y, Srinivasulu P, Paul A

机构信息

Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, West Bengal, India.

Astra Microwave Products Limited (AMPL), Hyderabad, Telangana, India.

出版信息

Sci Rep. 2024 Sep 27;14(1):22280. doi: 10.1038/s41598-024-62430-3.

DOI:10.1038/s41598-024-62430-3
PMID:39333564
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11436734/
Abstract

A VHF phased array radar for atmospheric dynamics observation is installed at the University of Calcutta, Kolkata. The Calcutta University Stratosphere-Troposphere Radar (CUSTR) operates at 53 MHz with 475 three sub-element Yagi-Uda antenna array. The CUSTR system is a high-power fully active phased array system with a dedicated 2 kW solid-state Transmit-Receiver Module (TRM) attached to each antenna, providing a total peak power of 950 kW with 47.5 kW average power at 5% maximum duty ratio. The system provides electronic beam steering capability to steer the beam 360° in azimuth direction with a maximum off-zenith angle of 40°. The array is configured with 25 sub-arrays and operates either in a combined mode in Doppler Beam Swinging or in Spaced Antenna mode using a multi-channel digital receiver system. The TRM has been designed to provide a very short pulse of 0.5 µs and a long pulse of 128 µs. The system description along with the initial scientific observations such as atmospheric boundary layer, troposphere-lower stratosphere wind measurements along with preliminary wind validation, mesosphere echoes and ionosphere irregularities are presented.

摘要

一台用于大气动力学观测的甚高频相控阵雷达安装在加尔各答的加尔各答大学。加尔各答大学平流层-对流层雷达（CUSTR）工作在53兆赫兹，配备475个三元八木-宇田天线阵列。CUSTR系统是一个高功率全有源相控阵系统，每个天线都连接有一个专用的2千瓦固态发射-接收模块（TRM），在5%的最大占空比下提供950千瓦的总峰值功率和47.5千瓦的平均功率。该系统具备电子束转向能力，可在方位方向将波束转向360°，最大天顶角偏离为40°。该阵列由25个子阵列组成，可在多普勒波束扫描的组合模式下运行，也可使用多通道数字接收系统在间隔天线模式下运行。TRM被设计为可提供0.5微秒的极短脉冲和128微秒的长脉冲。文中介绍了该系统的描述以及诸如大气边界层、对流层-平流层下部风测量及初步风验证、中间层回波和电离层不规则性等初始科学观测结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/ea49d0538e41/41598_2024_62430_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/7d6f7f148aba/41598_2024_62430_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/b1d0b430e491/41598_2024_62430_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/199b30bbe83b/41598_2024_62430_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/a2c2a378fd00/41598_2024_62430_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/ae38053c05e7/41598_2024_62430_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/2e1977a62eff/41598_2024_62430_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/99a8e8b435b4/41598_2024_62430_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/9f39ab474d2a/41598_2024_62430_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/ea49d0538e41/41598_2024_62430_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/7d6f7f148aba/41598_2024_62430_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/0b0ad5e3c2ba/41598_2024_62430_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/d5d9da67fe62/41598_2024_62430_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/b1d0b430e491/41598_2024_62430_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/199b30bbe83b/41598_2024_62430_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/a2c2a378fd00/41598_2024_62430_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/ae38053c05e7/41598_2024_62430_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/2e1977a62eff/41598_2024_62430_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/99a8e8b435b4/41598_2024_62430_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/9f39ab474d2a/41598_2024_62430_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9445/11436734/ea49d0538e41/41598_2024_62430_Fig11_HTML.jpg

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