SiRFstarV™ 5ea は車載用として認定を受けており、感度、TTFF、アーバンキャニオン（ビルとビルの間）での使用、精度において優れたパフォーマンスを発揮します。CSR の SiRFDRive® 推測航法技術と組み合わせることで、人の多い都市部の道路やアーバンキャニオン、トンネル、立体駐車場など、極めて過酷な自動車環境でも途切れることなく測位を行います。
CSR の次世代 SiRFstarV ファミリーは、GPS、GLONASS、 BDS（旧 COMPASS）、および Galileo 衛星を追跡するための Quad-GNSS を搭載しています。SiRFstarV チップは、極めて正確な位置の継続的把握と高い耐干渉性を実現します。感度、TTFF、アーバンキャニオン（ビルとビルの間）での使用、精度において優れたパフォーマンスを発揮できるよう、常に限界に挑んでいます。
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SiRFstarV 5ea is a quad-GNSS location platform designed to support GPS, GLONASS, Galileo and BDS systems and optimized to address the ever more demanding needs of the auto industry. Designed for automotive market AEC-Q100 qualification requirements, the SiRFstarV 5ea is able to break through ambient electrical noise and radio interference to provide automotive Tier One suppliers and OEMs around the world with continuous, highly accurate positioning capabilities for their next generation of in-dash navigation, display audio, and telematics applications in cars, trucks and other moveable assets requiring automotive-qualified devices. The quad-GNSS design of the SiRFstarV 5ea location device provides customers with a platform that is designed to meet the requirements for global and regional GNSS support for years to come, including GLONASS for Russia, Galileo for Europe, and BDS for China.
- High Positioning Performance and Accuracy
- Advanced Auto Navigation
- Cellular Coexistence
- Active Jammer Remover
- Easy, Cost Saving Integration
Optimized for Automotive Applications
The SiRFstarV 5ea brings a number of exciting SiRFstarV architectural features to the automotive market for the first time – from quad-GNSS support, LTE immunity and MEMS aiding to improved sensitivity and margins and low BOM – that result in significant location performance improvements, small package size, ease of integration and low-cost implementation. CSR SiRFInstantFix™ positioning enhancement technologies enable faster times to first fix and improved positional accuracy, even when antenna placement within a vehicle is less than optimal, such as under the dashboard, and the SiRFstarV 5ea is ready to support SiRFDRive® dead-reckoning technology, when available.
In addition, the 5ea offers a number of features, including an on-chip LNA, fail-safe I/O, integrated switchers, single supply voltage, simple RF matching and small size and packaging to make it easier for designers to use and integrate into a vehicle platform, giving suppliers and OEMs much greater flexibility in system design and antenna placement and helping speed time to market. Besides the AEC-Q100 qualification, the 5ea device undergoes stricter manufacturing, assembly and testing procedures to meet the tighter automotive quality and reliability standards.
With its 24 additional satellites (30, when fully deployed), GLONASS provides a valuable augmentation to GPS and enables the SiRFstarV 5ea to boost location performance, especially in urban canyons, by increasing service availability, reducing observation time, and making measurements more precise for the most demanding applications. The 5ea additionally will support Galileo and Compass systems, when they become available, with a software upgrade for even greater performance and ensured compliance to existing and future requirements of national GNSS systems.
LTE Radio Signal Immunity
The SiRFstarV architecture has been designed from the ground up to provide superior immunity to interference from LTE (long-term evolution) radio signals, giving suppliers and OEMs confidence in its ability to coexist in their designs with LTE. Coexistence of LTE with GPS, GLONASS and other GNSS signals is critical for continuous location awareness and use of location-based services, and CSR has implemented a number of mechanisms to boost immunity to LTE interference in the SiRFstarV 5ea to ensure the most satisfying user experience.
Active Jammer Removal: The SiRFstarV 5ea also includes improved active jammer removal, a unique CSR technology, which improves location performance by continually tracking and eliminating radio interference from up to eight sources, a critical requirement when location engines are in electrically noisy environments like those found in modern digital dashboards.
The complete CSR solution includes SiRFNav™ software running either on-chip (engine mode) or on the host CPU (tracker mode) to calculate the precise position, velocity and time and provide complete control of GNSS operation, including navigation, nav-aiding and hybrid location sub-functions.
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