GNSS software receiver development and ultra-tight integration with inertial sensors

GNSS 软件接收器开发以及与惯性传感器的超紧密集成

• 批准号: 371636-2009
• 负责人: Petovello, Mark
• 金额: $ 1.82万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=528304
• 关键词: GNSS; software; receiver; development; ultra

Positioning capability is becoming commonplace in today's society with certain automobiles, mobile telephones and even clothing being equipped with navigation systems. Most systems rely, at least in part, on Global Navigation Satellite System (GNSS) technology such as the U.S. Global Positioning System (GPS). Using optimal data processing strategies, positioning accuracies can be as good as 2-3 cm. Unfortunately, the GPS signals that reach the Earth have very low power, which have historically limited their use to "open-sky" areas where the satellite signals can be received without being attenuated by such things as foliage and buildings. However, GPS receiver manufacturers have, in the past ten years, developed high-sensitivity receivers that can track signals in degraded environments such as indoors where the signal is attenuated by a factor of about 1,000. Despite this extended operational range, high-sensitivity receivers typically suffer from positioning accuracies no better than several metres.

定位能力在当今社会中变得普遍，某些汽车、移动的电话甚至服装都配备有导航系统。 大多数系统至少部分地依赖于全球导航卫星系统（GNSS）技术，诸如美国全球定位系统（GPS）。 使用最佳的数据处理策略，定位精度可以达到2-3厘米。 不幸的是，到达地球的GPS信号具有非常低的功率，这在历史上限制了它们在“开放天空”区域的使用，在这些区域可以接收卫星信号而不会被诸如树叶和建筑物之类的东西衰减。 然而，GPS接收机制造商在过去十年中开发了高灵敏度接收机，其可以在诸如信号衰减约1000倍的室内的劣化环境中跟踪信号。 尽管操作范围扩大，但高灵敏度接收器的定位精度通常不超过几米。