贴一篇关于APRS设备的论文链接，虽然时间比较久了，但是内容质量高，涉及APRS的细节说的简单清楚，比互联网上传来传去的二手信息强多了。 [基于业余分组无线电和GPRS的APRS节点设计李华龙大连理工大学](https://kns.cnki.net/kcms2/article/abstract?v=vG2M3utQQCcS4VhMJWeWDmyWGKwYncMyKrX80EtsSTAaAvUHD_pSHqin8zabDIo0LYj-DmeUGwVhLTsmbB3J_Uto4AAgOg7OR8UFEdnTfJOjlUiCKAD_gbgRCdOat03eQNzkkSsKoqvJlqk7U7h_sHpyDnjOur8LBKhYoIpbRsA7ZjHxNACwk_jHNKUUEtnGC7tF311ulnA=&uniplatform=NZKPT) 查阅或下载全篇论文需要你所在的机构购买了中国知网的服务，如果没有可以直接打开这个链接，有效期到6月30日：[基于业余分组无线电和GPRS的APRS节点设计.pdf](https://sharpimg-my.sharepoint.cn/:b:/g/personal/admin_sharpimg_partner_onmschina_cn/EfVTahxexxZKnqKs4P-uGEEBIsWUdmhxnSrp4dNfrj2IhA?e=7rGmKg) [upl-image-preview uuid=f3916fa3-877f-4461-857a-63699cc81f72 url=https://storage.hamcq.cn/2025-05-17/1747451850-185894-2c43fbcdeb40e1db6193735f78cb3f3.png alt={APRS数据包的格式}] 整篇论文先分析的APRS的梗概，然后自己搓了一个APRS节点设备。即使你不愿意跟着搓一个APRS节点设备，也可以大概的看一下，了解一些APRS相关的知识。不过话又说回来，知网里涉及业余无线电的内容，高质量的很少，大多混杂着一些杂志。

低情商的说一嘴，这作为通信专业的硕士毕业论文也太水了大部分内容都是搬运芯片厂商的文档，最关键的APRS音频信号调制解调部分基本没说

@"BG6UFA"#p65838 哈哈，但说无妨>!，反正我不是论文作者XD!

@"BG6UFA"#p65838 十年前的硕士论文，也正常，看起来侧重仪器设计

@"BG6UFA"#p65838 这让我好奇搜了一下Google Scholar，然后发现好东西不少

@"BH6ABO"#p66427 论文作者实验时，经我同意使用了我的呼号，我本人在场确保发射合规。另外关于内容水不水的问题，我觉得对aprs感兴趣、对aprs协议比较了解，尤其用各种技术路线手搓过节点的朋友可以读一下，再作评判。

@"BG6UFA"#p65838 根据我的实践经验，设计aprs节点的确没有太多的理论研究空间。作为工程类毕设来说，工作量主要体现在于协议细节比较繁杂，而且这种业余应用支撑文档有限，很多坑需要自己踩。另外就是从底层硬件一路做到完整系统并跑通，工程上看也有不小难度。至于你说的“音频信号调制解调”为何是“最关键”的部分，我不甚理解。是发射机把0/1映射到1200/2200Hz音频难，还是接收机写个匹配滤波器来分辨这两个信号难？

@"BG2TFM"#p66450 我的意思是将APRS音频信号解码成文本，以及将APRS文本内容转化成APRS音频信号这一部分比较模糊，这是APRS的核心内容而其他从GPS模组读取经纬度数据，控制蜂窝数据模组往APRS-IS发送数据都是非常简单的内容，学过Arduino的小孩都能快速实现

Design of an APRS node based on amateur group radio and GPRS.

Ironic

I've included a link to an article about APRS equipment. Although it's quite old, the content is of high quality and provides clear and concise information about APRS, which is much better than the second-hand information found online.
Design of an APRS node based on amateur group radio and GPRS – Li Hualong, Dalian Institute of Technology

To access or download the entire paper, your institution needs to have a subscription to China National Knowledge Infrastructure (CNKI). If not, you can directly open this link, which is valid until June 30:Design of APRS nodes based on amateur group radio and GPRS.pdf

{APRS数据包的格式}

The paper first analyzes the overview of APRS, and then builds an APRS node device. Even if you don't want to build your own APRS node, you can still take a look and learn some basic knowledge about APRS. However, it is worth noting that there are very few high-quality articles on amateur radio in CNKI, most of which are mixed with magazine content.

BG6UFA

To put it bluntly, this thesis for a master's degree in communications is really subpar.

Most of the content consists of documentation from chip manufacturers, but the most important APRS audio signal modulation and demodulation part is not discussed.

Ironic

BG6UFA Haha, but that's fine.Anyway, I'm not the author of the paper. XDAs for communication-related topics, I don't understand them at all. The first half of the paper should be fine, but if there are problems in the first half, then the author will have a big problem.

5Breeze

BG6UFA The master's thesis from ten years ago was also normal and appeared to focus on instrument design.

NB6G

BG6UFA This made me curious, so I searched on Google Scholar and found a lot of interesting things.

BG2TFM

BG6UFA Based on my practical experience, designing an APRS node doesn't offer much room for theoretical research. As a capstone project in engineering, the main challenges lie in the complex details of the protocols, and the limited support documentation makes it difficult to avoid pitfalls. Furthermore, building a complete system from the underlying hardware up is also a significant challenge from an engineering perspective.

Regarding your statement that "audio signal modulation and demodulation" is the "most critical" part, I don't quite understand. Is it because the transmitter maps 0/1 to 1200/2200 Hz audio frequencies, or is it because the receiver struggles to create a matching filter to distinguish between these two signals?

BH6ABO

The authors have a vessel named "Hamcq" in their research.

BG2TFM

BH6ABO The authors used my call sign during their experiment, with my prior consent. I was present to ensure that the transmissions were compliant.

Regarding the issue of content quality, I believe that those interested in APRS and familiar with the APRS protocol, especially those who have personally built nodes using various technical approaches, can review it and make their own judgment.

BG6UFA

BG2TFM What I mean is that the process of decoding APRS audio signals into text, and converting APRS text content into APRS audio signals, is somewhat unclear. This is the core of APRS.

Furthermore, reading latitude and longitude data from the GPS module and controlling the cellular data module to send data to the APRS-IS is a very simple task. Even children who have learned about Arduino can quickly implement it.

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