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The Deployable Low-Band Ionosphere and Transient Experiment
Radio Science ( IF 1.6 ) Pub Date : 2021-06-28 , DOI: 10.1029/2021rs007298
J. F. Helmboldt 1 , B. B. Markowski 1 , D. J. Bonanno 1 , T. E. Clarke 1 , J. Dowell 2 , B. C. Hicks 1 , N. E. Kassim 1 , G. B. Taylor 2
Affiliation  

The Deployable Low-Band Ionosphere and Transient Experiment (DLITE) is a four-element interferometric radio telescope made from mostly commercial off-the-shelf parts to minimize costs and maximize ease of deployment. It operates in the high frequency and very high frequency (VHF) regimes, nominally in a 30–40 MHz band, but with good sensitivity (sky-noise dominated) in the 20–80 MHz range. Its configuration is optimized to probe ionospheric structure using the so-called “A-Team,” exceptionally bright sources of cosmic radio emission. Methods have been developed to track the apparent positions and intensities of A-Team sources without the need for beam forming to enable measurements of VHF scintillations as well as total electron content gradients. Time difference of arrival and frequency difference of arrival methods have been adapted for all-sky imaging to facilitate both statistical measurements of scintillation levels and time domain astronomy. This study provides a detailed description of the system design, the analysis algorithms, and the science that can be conducted using results from two prototype DLITE systems in Maryland and New Mexico.

中文翻译:

可部署的低频段电离层和瞬态实验

可部署低波段电离层和瞬态实验 (DLITE) 是一种四元素干涉射电望远镜,主要由商用现成部件制成,以最大限度地降低成本并最大限度地简化部署。它在高频和甚高频 (VHF) 范围内运行,名义上在 30-40 MHz 频段内运行,但在 20-80 MHz 范围内具有良好的灵敏度(以天空噪声为主)。它的配置经过优化,可以使用所谓的“A-Team”(异常明亮的宇宙射电发射源)探测电离层结构。已经开发了一些方法来跟踪 A-Team 源的表观位置和强度,而无需波束形成,从而能够测量 VHF 闪烁以及总电子含量梯度。到达时间差和到达频率差方法已适用于全天成像,以促进闪烁水平和时域天文学的统计测量。本研究详细描述了系统设计、分析算法以及可以使用马里兰州和新墨西哥州的两个原型 DLITE 系统的结果进行的科学。
更新日期:2021-07-21
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