satellite broadcasting

简明释义

人造卫星广播

英英释义

例句

1.Sports fans can enjoy live games from around the world thanks to satellite broadcasting technology.

得益于卫星广播技术，体育迷可以欣赏到来自世界各地的现场比赛。

2.The military relies on satellite broadcasting for secure communications during operations.

军方依靠卫星广播在行动中进行安全通信。

3.The advent of satellite broadcasting has revolutionized the way we consume media, providing high-quality signals even in remote locations.

卫星广播的出现彻底改变了我们消费媒体的方式，即使在偏远地区也能提供高质量的信号。

4.Educational programs are now widely available through satellite broadcasting, making learning accessible to more people.

通过卫星广播，教育节目现在广泛可用，使更多人能够接受学习。

5.Many rural areas now have access to television through satellite broadcasting, which allows them to receive channels that were previously unavailable.

许多偏远地区现在通过卫星广播获得电视信号，这使他们能够接收到之前无法获得的频道。

作文

In today's digital age, the way we consume information and entertainment has drastically changed. One of the most significant advancements in this field is satellite broadcasting, which has revolutionized the way we access television and radio content. Satellite broadcasting refers to the transmission of television and radio signals via satellites orbiting the Earth. This technology allows for a broader reach and higher quality of signal compared to traditional broadcasting methods.The origins of satellite broadcasting can be traced back to the mid-20th century, when the first communication satellites were launched. These satellites enabled broadcasters to transmit signals over vast distances, overcoming geographical barriers that limited traditional broadcasting methods. As a result, viewers in remote areas could access the same channels as those in urban centers, democratizing information and entertainment.One of the key advantages of satellite broadcasting is its ability to provide high-quality audio and video content. Unlike analog signals, which are prone to interference and degradation, digital satellite signals offer clearer images and better sound quality. This improvement has enhanced the viewing experience for millions of people around the world.Moreover, satellite broadcasting has facilitated the rise of numerous channels and programming options. With the ability to transmit multiple signals simultaneously, satellite providers can offer hundreds of channels catering to diverse interests, from sports and news to movies and documentaries. This variety empowers consumers to choose content that aligns with their preferences, fostering a more personalized viewing experience.In addition to entertainment, satellite broadcasting plays a crucial role in disseminating important information during emergencies. For instance, during natural disasters, satellite signals can remain operational even when terrestrial communication networks fail. This reliability allows authorities to broadcast critical updates and safety instructions to affected populations, potentially saving lives.Another significant aspect of satellite broadcasting is its global reach. Unlike terrestrial broadcasting, which is limited by geography, satellites can cover entire continents and even remote islands. This capability has made it possible for international news organizations to report on events happening worldwide, ensuring that audiences receive timely and accurate information regardless of their location.Despite its many benefits, satellite broadcasting also faces challenges. The initial setup costs for satellite dishes and receivers can be prohibitive for some households, particularly in developing countries. Additionally, the reliance on satellites means that any technical issues or orbital debris can disrupt services, leading to temporary outages.Another consideration is the environmental impact of launching satellites into space. As the demand for satellite services grows, so does the number of satellites being launched, raising concerns about space debris and its potential threat to existing satellites and space missions.In conclusion, satellite broadcasting has transformed the landscape of media consumption by providing high-quality, diverse content to audiences worldwide. Its ability to overcome geographical barriers and deliver vital information during emergencies highlights its importance in our modern society. However, as we continue to embrace this technology, it is essential to address the associated challenges to ensure that satellite broadcasting remains a sustainable and reliable source of information and entertainment for future generations.

在今天的数字时代，我们获取信息和娱乐的方式发生了巨大的变化。其中一个重要的进步是卫星广播，它彻底改变了我们访问电视和广播内容的方式。卫星广播指的是通过绕地球轨道运行的卫星传输电视和广播信号。这项技术相比传统广播方法，允许更广泛的覆盖范围和更高质量的信号。卫星广播的起源可以追溯到20世纪中叶，当时第一颗通信卫星被发射。这些卫星使广播商能够跨越广阔的距离传输信号，克服了限制传统广播方法的地理障碍。因此，偏远地区的观众可以访问与城市中心相同的频道，实现了信息和娱乐的民主化。卫星广播的一个关键优势是能够提供高质量的音频和视频内容。与容易受到干扰和退化的模拟信号不同，数字卫星信号提供更清晰的图像和更好的音质。这一改进提升了全球数百万人的观看体验。此外，卫星广播促进了无数频道和节目选择的崛起。由于能够同时传输多个信号，卫星提供商可以提供数百个频道，满足从体育、新闻到电影和纪录片等多种兴趣。这种多样性使消费者能够选择符合其偏好的内容，促进了更个性化的观看体验。除了娱乐之外，卫星广播在紧急情况下传播重要信息方面也发挥着至关重要的作用。例如，在自然灾害期间，即使陆地通信网络失效，卫星信号仍然可以保持操作。这种可靠性使当局能够向受影响的人群广播关键更新和安全指示，潜在地拯救生命。卫星广播的另一个重要方面是其全球覆盖范围。与受地理限制的地面广播不同，卫星可以覆盖整个大陆甚至偏远岛屿。这一能力使国际新闻机构能够报道全球发生的事件，确保观众无论身处何地都能及时获得准确的信息。尽管有许多好处，卫星广播也面临挑战。卫星天线和接收器的初始安装成本对一些家庭来说可能是负担，特别是在发展中国家。此外，依赖卫星意味着任何技术问题或轨道碎片都可能干扰服务，导致暂时中断。另一个考虑因素是将卫星发射到太空的环境影响。随着对卫星服务需求的增长，发射的卫星数量也在增加，这引发了关于太空碎片及其对现有卫星和太空任务潜在威胁的担忧。总之，卫星广播通过向全球观众提供高质量、多样化的内容，改变了媒体消费的格局。其克服地理障碍并在紧急情况下传递重要信息的能力突显了其在现代社会中的重要性。然而，随着我们继续接受这项技术，解决相关挑战至关重要，以确保卫星广播在未来几代人中仍然是可持续和可靠的信息和娱乐来源。