HLK-GS475 GNSS MODULE Data Sheet: Third-Generation GNSS Location Hub with Dual Frequency Support
■Function
▲The HLK-GS475 sensor hub includes a dual-processor architecture (ARMCM4+CM0) that ensures each task is handled in the most power efficient manner. The HLK-GS475 GNSS includes two RF paths, a low power path and a high-performance path, enabling the lowest power consumption at any received signal condition.
▲The HLK-GS475 simultaneously supports GPS, GLONASS, BeiDou, Galileo, SBAS, and QZSS in both the L1/B1/E1 and L5/E5a frequency bands. This industry-first dual-band capability provides the most accurate positioning available in the market today.
▲The HLK-GS475 achieves system-level performance benefits from tightly integrating the sensor and GNSS signals. Measurements from sensors such as accelerometers, gyroscopes, magnetometers, and others are fused with GNSS measurements to provide a highly accurate, cross-calibrated output to applications while helping to maintain a lower system power profile. Cross-calibration is achieved by using sensor measurements to aid GNSS for small movements and by using GNSS to calibrate sensor measurements, the latter having inherent drift that accumulates over time and larger movements.
●HLK-GS475 Key Feature
▲Systems Integrated multi-frequency GNSS baseband and RF front end for simultaneous reception of GPS, GLONASS, BeiDou (BDS), Galileo (GAL), and SBAS satellite systems.
▲Support for position batching, geofencing, sensor fusion and sensor navigation
▲ARM-based 32-bit Cortex-M4F (CM4) CPU:
◆–Single-precision Floating Point Unit (FPU).
◆–Memory Protection Unit (MPU).
◆–Internal SRAM (single-cycle access at full speed).
◆–ROM with bootloader capability.
◆–Single Instruction Multiple Data (SIMD)
▲Digital Signal Processing (DSP) functions.
◆–1.25 Dhrystone MIPS/MHz
◆–Operating frequency up to 150 MHz.
■Benefits:
▲Highest levels of navigation performance.
▲Reduced application-processor load by performing on-chip PVT computations.
▲Multipath rejection
▲Better weak signal tracking
▲Sub-meter accuracy in open sky
▲Reduces signal cross correlation
▲Very low GNSS and sensor hub power consumption.
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/11/17 |
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V3.2 |
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667 KB |
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