本实验成果发布于IEEE SmartIoT 2023，国际智能物联网会议。

The relevant paper was published in 2023 IEEE International Conference on Smart Internet of Things.

引言

偏远地区的无线传输资源有限，卫星通信则不受此限制。然而现有民用的卫星通信带宽具有局限性。该研究项目将实测数据经过压缩，最大化利用北斗短报文有限的字符数，并且尝试了加密算法，保证了碳监测数据的安全性。

Introduction

Wireless transmission resources in remote areas are limited, whereas satellite communication is not subject to such constraints. However, existing civilian satellite communication bandwidth has limitations. This research project compresses measured data, maximizing the use of the limited character count in Beidou short messages, and explores encryption algorithms to the security of carbon monitoring data.

定义：数据延迟在1分钟内被定义为成功。

地点：宁波，中国

Definition: data delay within 1 min is defined as successful

Test site: Ningbo China (29°47'53''N, 121°33'46''E) 

(1) 系统功耗System power

HT8850：100瓦

通信：每次传输峰值17.5瓦，持续时间<0.3秒，几乎不影响电池寿命。

HT8850: 100W

Communication: peak 17.5W for <0.3 secons duration per transmission, barely influencing the battery life

(2) 最终实现了两种传输模式Two transmission modes were ultimately implemented

第一种为单一用户模式，用户拥有自己的北斗接收模块，经过处理后的数据由树莓派实现灵活性高的数据获取。

第二种模式支持北斗数据上云，多个拥有权限的用户能够透过人性化的网页界面，从云端获取实时数据。

The first is a single-user mode, where each user has their own Beidou receiving module, and the processed data is obtained with high flexibility through a Raspberry Pi.

The second mode supports uploading Beidou data to the cloud, where multiple authorized users can access real-time data via a user-friendly web interface.