eRide's new Opus One is a miniature high-sensitivity, low-power GPS/AGPS receiver that combines a hardware measurement platform (MP) with powerful navigation software designed to run on a host microprocessor. The MP chipset includes the OPUS One Baseband IC and the Prelude One RF Receiver IC. The navigation software leverages the resources of the host CPU, resulting in a GPS solution that offers less redundancy, lower power consumption, and significant cost savings, according to the company. The Opus One baseband employs novel decoding algorithms, effectively achieving 44 000 correlators. Taking measurement data through a single input from the Prelude One, it supplies satellite measurement data to the host processor via a simple UART interface. The Prelude One combines an LNA with an image-reject mixer/RF-AMP, a bandpass filter, an AGC, and a fully-integrated VCO/PLL. Sensitivity is ultra-high at -157 dBm and it consumes only 110 mW whilst tracking. Navigation software runs in background. The solution's 13 x 18 mm total footprint supports miniaturised designs.
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