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| Atheros uN3010单片GPS接收方案 | |||||
作者：Atheros 文章来源：Atheros 点击数： 更新时间：2008-4-7  |
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uN3010 Technology Overview The Atheros uN3010 is a high-performance GPS solution, consisting of the tiny CMOS uN3010 GPS IC teamed with the powerful ORION V2.x multi-mode navigation software. The uN3010 IC is a highly-integrated GPS receiver comprised of a single-conversion RF front-end and a GPS baseband processor combined into a single die. The L1 RF front-end includes an on-chip low noise amplifier (LNA), and a configurable phase-locked loop (PLL) that supports six (6) TCXO frequencies. The uN3010 provides 20- channel GPS operation and is based on an optimized 16-bit DSP with a compact, embedded real-time operating system (RTOS). The ORION V2.x Software is a powerful GPS navigation software package that supports hosted, autonomous, assisted-conventional, and single-fix Assisted-GPS (AGPS) modes while exceeding all 3GPP and other AGPS performance requirements. ORION V2.x also provides advanced acquisition algorithms to efficiently find weak GPS signals by utilizing the company’s third-generation search engine, and advanced tracking loops. These features allow ORION to quickly adapt to the dynamic conditions found in harsh urban canyons. The Atheros uN3010 solution can operate in stand-alone GPS mode (NMEA, PVT out) or host-based mode where the position is calculated by the host processor or network. In the host-based configuration, the ORION V2.x software has been designed to minimize burden on the host processor. With the uN3010, Atheros offers one of the highest performance, most cost-effective GPS solutions on the market today which also delivers on the size, power and cost requirements so important to our customers.  图1. uN3010外形图  图2. uN3010系统架构图 uN3010 解决方案主要优势： Low-cost, single-chip GPS RF front-end and baseband processor implemented in a single monolithic die 20-channel GPS architecture, featuring eight independent search engines for simultaneous search and 12 tracking channels with power-down capability Advance power management architecture minimizes consumption through the individual power-down of multiple core and I/O islands Low-power RTC suitable for coin-cell battery backup High sensitivity operation with autonomous and assisted support Supports autonomous, assisted conventional, and single-fix AGPS modes while exceeding requirements for 3GPP Install n’ Go software enables the industry’s fastest and easiest integration of Windows CE® host-based GPS navigation software Modular software architecture supports other host-based solutions simplifying porting to any desired RTOS Patent-pending u-Map mapping assistance allows for even higher precision of ground tracking. uN3010 Portable Evaluation Kit  Complete with software and an integrated uN3010 daughter board, the ORION RX2 Evaluation Kit (EVK) is a full-featured GPS receiver that provides a conventional platform to evaluate the performance of the ORION RX2. 下表为uN3010的主要指标： 
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