Core Viewpoint - The article discusses the launch of the Pulsar satellite by Xona Space Systems, which aims to provide a more reliable and precise alternative to the existing GPS system, addressing its vulnerabilities to interference and deception [1][2][10]. Group 1: Satellite Technology and Development - The Pulsar satellite is the first of a planned constellation of 258 satellites designed to operate in low Earth orbit, approximately 12,000 miles above the Earth, offering stronger and more precise signals than GPS [1][2]. - Xona's CTO, Tyler Reid, claims that the signals from their satellites will be about 100 times stronger than GPS signals, allowing for better penetration through buildings and reduced interference coverage [1][2]. - The satellite system aims to achieve positioning accuracy of 3 inches (10 centimeters) or better, significantly improving navigation reliability in challenging environments [3][5][6]. Group 2: GPS Vulnerabilities and Market Need - The GPS system, operational since 1993, is critical for various applications but is susceptible to interference from various sources, including space weather and low-cost jammers [2][8]. - The ongoing conflict in Ukraine has highlighted the vulnerabilities of GPS, as interference has rendered precision-guided munitions ineffective, prompting a search for reliable alternatives [8][10]. - The proliferation of inexpensive jamming devices has raised concerns about GPS reliability, affecting commercial flights and other critical operations [8][10]. Group 3: Competitive Landscape and Future Plans - Xona is not the only company exploring alternatives to GPS; other firms like Anello Photonics and Advanced Navigation are developing ground-based solutions using inertial navigation systems [10][11]. - Xona plans to launch additional satellites in the coming years, with a goal to deploy most of its constellation by 2030, enhancing the resilience of critical infrastructure reliant on GPS [11][12]. - The company aims to design signals compatible with existing GPS technology, facilitating integration for GPS receiver manufacturers [11].

如果您希望可以时常见面，欢迎标星收藏哦~ 来源：内容 编译自 cnx-software ，谢谢。 它的工作原理是添加一个包含计时数据的前导码和一个包含基站信息和位置的数据 PLP（物理层管道）。一个基站就足以提供计时数据，即使范围 内有四个基站也能实现定位。时间精度为 100 纳秒（95% 的时间），预计平均定位精度约为 100 米。短期内，我们不会再看到汽车上安装用于此 目的的天线了。 NAB（美国全国广播协会）技术公司目前正在使用有限数量的 ATSC 3.0 基站测试 BPS。测试设备如下图所示，其中包括一台用于配置 BPS 用户 设备 (UE) 的计算机、一台用于测量和比较 GPS 和 BPS 1PPS（每秒一个脉冲）信号的高端示波器，以及一个装有 GSP 和 BPS 接收器的便携式机 架。 BPS 的开发分为六个阶段。第四阶段（2025-2027 年）将向公众部署基于 ATSC 3.0 的授时；第五阶段（2026-2027 年）将测试 BPS 定位；最后 阶段（2027 年至 2029 年）将部署基于 ATSC 3.0 的授时和定位。 BPS 很好，但它只适用于美国和其他一些国家使用的 ATSC 3. ...