product manual

PRODUCT DESCRIPTION

HLK-GS475 is based on Broadcom BCM47755 chip research and development design, integrated multi-frequency GNSS baseband and RF front-end, can receive GPS, GLONASS, Beidou (BDS), Galileo (GAL) and SBAS satellite systems at the same time.

The module supports multi-satellite systems, and integrates LNA (low noise amplifier) and SAW (surface acoustic wave) filters, which can achieve positioning accuracy of approximately decimeters, and high-precision positioning even in extremely deep urban canyons .

HLK-GS475 has industry-leading excellent performance, supports stand-alone mode and the advantages of low cost and low power consumption, and can provide customers with ideal and better performance GNSS solutions.

Interface Type

High-speed system interface (to application processor)
-Serial stream SPI slave device (up to 50 MHz)
-The alternate UART system interface supports a rate of up to 3.2Mbps.

Up to 17 programmable

Sensor interface
-Three BSC main ports.
-Two SPI masters (normal, dual channel, quad channel, up to 50MHz)
-Two ADC channels.
-UART (up to 3.2Mbps when using hardware flow control)

The main function

The system's integrated multi-frequency GNSS baseband and RF front-end can receive GPS, GLONASS, Beidou (BDS), Galileo (GAL) and SBAS satellite systems at the same time

*Support location batch processing, geofencing, sensor fusion and sensor navigation

*32-bit Cortex-M4F (CM4) CPU based on ARM:
-Single precision floating point unit (FPU).
-Memory Protection Unit (MPU).
-Internal SRAM (full speed single cycle access).
-ROM with boot loader function.
-Single instruction multiple data (SIMD)

*Digital signal processing (DSP) function.
– 1.25 Dhrystone MIPS / MHz
– Up to 150 MHz operating frequency.

Benefits:
* The highest level of navigation performance.
*Reduce processor load by performing PVT calculations
*Multipath suppression
*Weak signal tracking
*Decimeter-level accuracy in the air
*Reduce signal interference
*GNSS and sensor hub power consumption is very low.

General description

Module voltage

Receive signal type

* GPS L1 C/A
* GLONASS L1
* Beidou (BDS) B1
* Galileo (GAL) E1
* GPS/QZSS L5 and Galieo E5a
* QZSS L1 C/A
* IRNSS

Function and performance

Track example

TRACK DISPLAY

The HLK-GS475 GNSS (Global Navigation Satellite System) module supports GPS, Beidou (BDS) and QZSS multiple satellite systems, and has the advantages of fast positioning, accurate positioning and low power consumption.