相關主題
商品描述
Comprehensive resource on the dynamically developing issue of radio communication over long distances, especially in outer space
Reception of Weak Radio Signals from Space explores all aspects of detecting and making sense of extremely weak radio frequency (RF) signals, especially those emanating from space. The subject matter ranges from general physics fundamentals to highly specialized issues of design and optimization of microwave antennas, low-noise amplifiers, receivers, transmitters, and frequency synthesizers with very specific characteristics.
Special consideration is paid to the advanced technique of radio linking by reflection of signals from the lunar surface, where, using modern software for digital communication, it is possible to realize links with signals ten or more decibels weaker compared to analogue modes. Each chapter briefly summarizes the theory and applicable relationships and complements the discussed topic with descriptions of specific solutions for individual parts of the communication system. Detailed annotated examples of calculations and implementations are included to aid in reader understanding.
The book also discusses specific properties of antennas including brightness and noise temperature, directivity, and polarization, and covers the technical characteristics of interplanetary probes such as Voyager, Cassini, Mars Odyssey, and others.
Additional topics in Reception of Weak Radio Signals from Space include:
- Microwave receivers, covering noise matching, cooled amplifiers, noise figure measurement, and low-noise amplifiers for 1.3 and 10 GHz bands
- Wave propagation in free space and the influence of the atmosphere via precipitation clouds and the ionosphere, including techniques for measuring the figure of merit G/T of the receiving system
- Local oscillators, including direct digital and phase-locked loop synthesizers
- High-frequency rectangular and circular waveguides and coaxial and planar transmission lines
- Parabolic antennas, describing mirror geometry and its radiation as well as scalar radiator feeds
Reception of Weak Radio Signals from Space is an excellent resource on up-to-date information for engineers and scientists working in space communications as well as graduate and senior undergraduate students and radio amateurs.
商品描述(中文翻譯)
關於長距離無線通信，特別是在外太空中不斷發展的議題的綜合資源
接收來自太空的微弱無線信號 探討了檢測和理解極其微弱的無線頻率 (RF) 信號的各個方面，特別是那些來自太空的信號。這個主題涵蓋了從一般物理基礎到微波天線、低噪聲放大器、接收器、發射器和具有非常特定特性的頻率合成器的設計和優化等高度專業化的問題。
特別關注的是通過反射信號從月球表面進行無線鏈路的先進技術，利用現代數字通信軟體，可以實現與信號強度比類比模式弱十個或更多分貝的鏈路。每一章節簡要總結了理論和適用的關係，並用具體解決方案的描述來補充所討論的主題，這些解決方案針對通信系統的各個部分。書中還包含詳細的註解範例計算和實現，以幫助讀者理解。
本書還討論了天線的特定特性，包括亮度和噪聲溫度、指向性和極化，並涵蓋了如 Voyager、Cassini、Mars Odyssey 等星際探測器的技術特性。
接收來自太空的微弱無線信號 中的其他主題包括：
- 微波接收器，涵蓋噪聲匹配、冷卻放大器、噪聲指標測量，以及 1.3 和 10 GHz 頻段的低噪聲放大器
- 自由空間中的波傳播及大氣對降水雲和電離層的影響，包括測量接收系統的性能指標 G/T 的技術
- 本地振盪器，包括直接數字和鎖相迴路合成器
- 高頻矩形和圓形波導以及同軸和平面傳輸線
- 拋物線天線，描述鏡面幾何及其輻射以及標量輻射器的供應
接收來自太空的微弱無線信號 是一本針對從事太空通信的工程師和科學家，以及研究生和高年級本科生及無線電愛好者的最新資訊的優秀資源。
作者簡介
Miroslav Kasal, PhD, is a Professor Emeritus at Brno University of Technology (BUT) in the Czech Republic. He was previously a scientific worker at the Institute of Scientific Instruments within the Academy of Sciences of the Czech Republic's Department of RF Spectroscopy. He last held the position of Department Head. He is an experienced experimenter and lifelong active amateur radio operator with a vast amount of theoretical knowledge and practical experience in the field.
作者簡介(中文翻譯)
米羅斯拉夫·卡薩爾，博士，是捷克共和國布爾諾科技大學（Brno University of Technology, BUT）的名譽教授。他曾在捷克共和國科學院的射頻光譜學部門的科學儀器研究所擔任科學工作者，並最後擔任部門負責人。他是一位經驗豐富的實驗者，也是終身活躍的業餘無線電操作員，在該領域擁有大量的理論知識和實踐經驗。
