Radio Ground Wave Monitoring of Lake Salinity

R.M. Thomas

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Radio Ground Wave Monitoring of Lake Salinity

机译：湖泊盐度的无线电地波监测

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The propagation loss over the Earth's surface of vertically polarised high frequency (3-30 MHz) radio ground wave signals is dependent on the radio frequency, path length and, in particular, on the electrical conductivity and relative permittivity of the surface medium. The electrical conductivity of water is directly related to its concentration of dissolved salts, or salinity. This paper reports an extended series of trial measurements of the salinity of Lake Alexandrina, at the mouth of the Murray River in South Australia, over an interval of almost 2 years, using the frequency-dependent ground wave loss technique. Each measurement provided a single "average" value of salinity over the propagation path. Excellent agreement was obtained with conventional laboratory measurements on water samples taken from an adjacent point of the lake at almost the same time. The success of the measurement program suggests a system for operational use which, in conjunction with a water temperature sensor and a communications link, would provide a convenient means of automatically monitoring the solinity of lakes and rivers from a remote laboratory.

机译：垂直极化的高频（3-30 MHz）无线电地波信号在地球表面上的传播损耗取决于无线电频率，路径长度，尤其取决于表面介质的电导率和相对介电常数。水的电导率与其溶解盐的浓度或盐度直接相关。本文使用频率相关的地波损耗技术，对南澳大利亚州墨累河河口亚历山大湖的盐度进行了一系列扩展的试验测量，历时近两年。每次测量都在传播路径上提供了一个单一的盐度“平均”值。用常规实验室测量几乎在同一时间从湖的相邻点采集的水样获得了极好的一致性。测量程序的成功表明，该系统可与水温传感器和通信链路结合使用，为操作使用提供了一种方便的方法，可从远程实验室自动监测湖泊和河流的溶解度。

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来源
《Journal of Electrical & Electronics Engineering, Australia》 |1996年第2期|p.147-153|共7页
作者
R.M. Thomas;
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作者单位

High Frequency Radar Division, Defence Science and Technology Organisation, PO Box 1500, Salisbury SA 5108 Australia;

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原文格式 PDF
正文语种 eng
中图分类电工基础理论;
关键词
radio ground wave propagation; basic transmission loss; conductivity; salinity;

机译：无线电地波传播;基本传输损耗;电导率;盐度;
入库时间 2022-08-18 01:10:07

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专利

1. Discussion on Accurate measurement of the group velocity of radio waves in the atmosphere, using radar technique, A method of determining the velocity of radio waves over land on frequencies near 100 kc/s and The measurement of the velocity of propagation of centimetre radio waves as a function of height above the Earth. Part 1: Ground-level measurements of the velocity of propagation over a sea path before the Radio Section, 7th May, 1947 [J] . Electrical Engineers - Part III: Radio and Communication Engineering, Journal of the Institution of . 1947,第32期

机译：讨论使用雷达技术准确测量大气中无线电波的群速，确定频率在100 kc / s附近的陆地上无线电波速度的方法以及测量厘米无线电波传播速度的方法是地球高度的函数。第1部分：1947年5月7日在无线电台之前对海面传播速度进行地面测量
2. The authors' reply to the discussion on Accurate measurement of the group velocity of radio waves in the atmosphere, using radar technique, on ?A method of determining the velocity of radio waves over land on frequencies near 100 kc/s and on The measurement of the velocity of propagation of centimetre radio waves as a function of height above the Earth. Part 1: Ground-level measurements of the velocity of propagation over a sea path [J] . Smith R.A., Franklin E., Whiting F.B., Electrical Engineers - Part III: Radio and Communication Engineering, Journal of the Institution of . 1947,第32期

机译：作者对以下问题的答复：使用雷达技术准确测量大气中无线电波的群速度，关于确定在100 kc / s附近的频率上陆地上无线电波速度的方法以及关于测量无线电波速度的讨论。厘米无线电波的传播速度与地球上方高度的关系。第1部分：海平面上海平面上传播速度的地面测量
3. Tomographic imaging of isolated ground surfaces using radio ground waves and conjugate gradient methods [J] . Z.Wu IEE proceedings. Radar, sonar and navigation . 2001,第1期

机译：使用无线电波和共轭梯度法对孤立地面进行层析成像
4. Analysis of subsidence monitoring of the saline soft soil ground in Qarham salt lake District [C] . Junyong Liu, Junhui Liu, Biao Ding International conference on Frontiers of manufacturing science and measuring technology . 2012

机译：盖勒姆盐湖区盐渍软土地基沉陷监测分析
5. Software Defined Radio Based Frequency Modulated Continuous Wave Ground Penetrating Radar [D] . Fiske, Patrick. 2020

机译：软件定义的基于无线电的频率调制连续波接地穿透雷达
6. The role of lake size and local phenomena for monitoring ground-fast lake ice [O] . Georg Pointner, Annett Bartsch, Bruce C. Forbes, -1

机译：湖泊面积和局部现象在监测地面速冻湖冰中的作用
7. Evaluation of the Ground-based Wave Distribution Function of VLF Radio Waves by using Full-wave Analysis [O] . Tomoya Sakai, Shin Shimakura 2001

机译：使用全波分析评估VLF无线电波的地基波分布函数

Radio Ground Wave Monitoring of Lake Salinity

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