The DS-353 utilized SiRFstarV ™ and features Quad-GNSS for tracking GPS, GLONASS, BDS and Galileo satellites. The product family delivers highly accurate continuous location, advanced power management and high interference immunity. These continue to push the envelope of performance in sensitivity, TTFF and urban canyon availability and accuracy. With a built-in DSP and extremely low power consumption, the family can get fast location fixes for geo-tagging images or videos, asset tracking and wearable applications.

Performance
　• GPS, GLONASS, Galileo and SBAS reception for high GNSS availability and accuracy
　• High sensitivity navigation engine (PVT) tracks as low as
　　 GPS:-165dBm、GLONASS:- 159dBm
　• 52 track verification channels
　• SBAS (WAAS or EGNOS,MSAS)
　• Active Jammer Remover, removes in-band jammers up to 80 dB-Hz
　• Tracks up to 8 CW jammers
　• Multimode A-GPS (Autonomous, MS-Based, and MS-Assisted) – Need operator support
　• Embedded CGEE / SGEE (With back-end server support) speed up TTFF a lot and makes cold start 　　 time to be around 20+ seconds.
　• SiRFGeoRecovTM Reverse EE makes positioning process being done under power saving mode.
　• Reacquisition Time: 0.1 second
　• RF Metal Shield for best performance in noisy environments

Hardware and Software
　• Based on the high performance features of SiRFstarV™ low power single core logic.
　• Adaptive micropower controller
　• Only 50 to 500μA maintains hot start capability (core logic)
　• < 10mW required for TricklePower™ mode
　• RoHS compliant (lead-free)
　• Advanced navigation features
　• Smart sensor supported by I²C interface
　• External interrupt input for context change detection
　• Dimension : 20 x 20 x 7 mm