Untethered Dead Reckoning (UDR)

UDR / LOCOSYS Technology Inc. established in 2005, came from a well-known research organization of information industry, a company that provide services the scope of which spans from both hardware and software in Global Navigation Satellite System (GNSS), Wireless Communication, Embedded System to Avionics, Automotive and Consumers electronics.

Promotion Product-RTK-1612

Promotion Product-RTK-1612

The RTK-1612 is a high-performance dual-band GNSS RTK module that designed for applications requiring centimeter level positioning accuracy.

Promotion Product-RTK-1010

Promotion Product-RTK-1010

The RTK-1010 is a high-performance dual-band GNSS RTK module that designed for applications requiring centimeter level positioning accuracy. It adopts 12 nm process and integrate efficient power management architecture to perform low power and high sensitivity. The module supports concurrent reception of GPS, GLONASS, BeiDou, GALILEO, and QZSS to improve the availability and reliability of RTK solution even in the harsh environment.


Untethered Dead Reckoning (UDR) - GPS & GNSS Positioning Module Manufacturer - LOCOSYS

Based in Taiwan, LOCOSYS Technology Inc., since 2006, is a Untethered Dead Reckoning (UDR) | GPS & GNSS positioning module supplier. Main product, including GNSS positioning module, GNSS dead reckoning(DR) module, RTK and RTD high-precision module, Bluetooth 4.0 and BT 2.4G wireless module, MEMS module, traffic information RDS-TMC module, ARM system platform solutions and related APP test software.

Best partner of 'Automotive Dead Reckoning' in Global automotive industry, also a qualified supplier to tier 1 & tier 2 manufacture in automotive industry (design house, EMS, OEM, ODM). Strong R&D in software, hardware and system integration for hardware and software in global navigation satellite system (GNSS), wireless communication, embedded system to avionics, automotive and consumers electronics, LOCOSYS's products are delivered meeting international standards - IATF16949, REACH, PPAP, RoHS, CAMDS, ISO, AEC-Q100, SAE and so forth.

LOCOSYS has been offering our customers high-quality GPS & GNSS Positioning Modules since 2006, both with advanced technology and 11 years of experience, LOCOSYS ensures each customer's demands are met.

Untethered Dead Reckoning (UDR)



LOCOSYS Untethered Dead Reckoning product is that it provides a high refresh rate for location data or an instant High Navigation Rate (HNR) output.

Dead Reckoning Modules

Dead Reckoning Technology

Currently, vehicles are usually positioned using the Global Positioning System (GPS/GNSS)
However, in practical applications, GNSS satellite signals are not completely reliable under high buildings, overpasses, basement parking lots, tunnels, dense trees and other sheltered environment which can reduce the positioning accuracy. Therefore, if you want to improve the accuracy of navigation, Dead Reckoning navigation becomes necessary.

Dead Reckoning Combining with GNSS

The perfect combination of Dead Reckoning and GNSS is a perfect match for automotive navigation. Combining with GNSS signal, gyro steering information and CAN-Bus speed / pulse estimation, seamless real-time accurate positioning is achieved.   

Furthermore, the application of Dead Reckoning technology by LOCOSYS is good news to the car owners. Because even in the process of driving when GNSS signal is lost, they can accurately navigate and locate.

TAGDR ModulesDead Reckoning(DR),  Dead Reckoning TechologyGNSS Modules

Dead Reckoning for Underground tunnels

LOCOSYS Success Stories

Dark blue track: GNSS
Light blue track: UDR

Location: Tokyo,Yamate tunnel 18.6 km rigorous field test.

Result 1 - 5 of 5

Result 1 - 5 of 5

Press Release