GNSS Receiver

High precision

High-Precision GNSS receiver

WiFive's high-precision GNSS receiver and convergence system is a carrier-based precision GPS/GNSS positioning technology that improves the positioning accuracy of existing GPS/GNSS satellite navigation receivers. It can be used for applications that require high precision navigation while in motion, such as entry-level autonomous vehicles, unmanned drones, unmanned autonomous vehicles.

We have developed a CSGNSS/DR receiver that provides a highly precise trajectory movement even under environments where the satellite signal reception state changes dynamically when the vehicle is moving., Currently, we are now developing a OTM-RTK (On-The-Moving Real-Time Kinematics) providing high-accuracy positioning by determining integer ambiguities on the move,

High-Precision Carrier Smoothed GNSS/DR technology

The WiFive’s CSGNSS/DR receiver provides a navigation with an error within 30 cm using a carrier phase and is a receiver that continuously provides precise location information even in areas where satellite signals are not received.

Our CSGNSS/DR receiver adopts 3D DR (Dead Reckoning) technology using car the odometer and IMU sensor. It provides continuous high precision positioning even when the satellite signal is lost, by compensating the DR sensor error,using satellite signals ,by detecting and calibrating cycle slips.

CSGNSS/DR receiver

On-The-Move RTK GNSS/DR receiver (under development)

Unlike conventional RTK receivers, the OTM-RTK GNSS receiver has no need to wait idle to obtain the carrier phase integer ambiguity, and it can provide high-precision position information in real time by determining the integer ambiguity quickly on the move.

WiFive's OTM-RTK GNSS receiver can provide precise positioning by determining the integer ambiguilties of a carrier phase within 10 seconds on the move using dual frequency of multiple satellite navigation signals (GPS, GLONASS, Galileo). Using VRS technology, it provides high precision positioning information within 20 ~ 30cm in real time.

The OTM-RTK GNSS/DR receiver is expected to converge with the 3D DR technique using the car odometer and IMU sensor. It will provide continuous high precision positioning even when the satellite signal is lost. On re-acquisition of the satellite signal, it will quickly recalculate integer ambiguity to provide a precise position even while on the move.

CSGNSS/DR system structure

CSGNSS Receiver Specifications

Output : time, position, speed, attitude, number of receiving satellites, DOP, output mode

Data Output Rate: 10 Hz to 100 Hz/strong>

Trajectory Accuracy: 30cm or less (on GNSS reception)

3D DR Error Growth Rate : within 3m per minute


Fusion type LDWS

We are developing products that reinforce the reliability of the existing black box image-based lane departure warning system (LDWS).