中英文对照：什么是低轨卫星？
低轨卫星是指在地球轨道上运行的人造卫星，其轨道高度较低。以下是关于低轨卫星的五个简要介绍：
What is a low Earth Orbit (LEO) satellite? Here are 5 brief introductions:
1. 轨道高度较低：低轨卫星的轨道高度通常在1000公里以下，相比于地轨卫星来说较低。这使得低轨卫星距离地球更近，可以实现更高的分辨率和更快的数据传输速度。
1. Lower Orbit Height: Low Earth orbit satellites typically operate at altitudes below 1000 kilometers, which is lower compared to geostationary satellites. This allows LEO satellites to be closer to Earth, enabling higher resolution and faster data transmission.
2. 短轨道周期：由于轨道高度较低，低轨卫星的轨道周期相对较短，通常在90分钟到两个小时之间。这意味着低轨卫星可以更快地围绕地球运行，提供更频繁的观测和数据收集。
2. Short Orbital Period: Due to the lower orbit height, LEO satellites have shorter orbital periods, typically ranging from 90 minutes to a few hours. This means LEO satellites can orbit the Earth more frequently, providing more frequent observations and data collection.
3. 高分辨率观测：低轨卫星由于距离地球较近，可以提供更高分辨率的观测图像和数据。这对于地质勘探、环境监测、农业等领域非常有用。
3. High-Resolution Imaging: LEO satellites, being closer to Earth, can provide higher-resolution imaging and data. This is particularly useful in fields such as geological exploration, environmental monitoring, agriculture, etc.
4. 低延迟通信：由于距离地球较近，低轨卫星可以实现较低的信号传输延迟。这使得它们在实时通信和互联网接入方面具有优势，对于偏远地区和移动应用尤为重要。
4. Low Latency Communication: Due to their proximity to Earth, LEO satellites can achieve lower signal transmission latency. This makes them advantageous for real-time communication and internet access, particularly in remote areas and mobile applications.
5. 卫星网络覆盖：由于低轨卫星可以实现全球范围的覆盖，并且可以组成卫星网络，因此可以提供全球性的通信和数据服务。这对于全球通信和互联网普及具有重要意义。
5. Satellite Network Coverage: Since LEO satellites can achieve global coverage and can be part of a satellite network, they can provide global communication and data services. This is significant for global communication and internet accessibility.
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