A f f o r d a b l e C e n t i m e t e r P r e c i s i o n f o r Ev e r y o n e

David GNSS Receiver

Base & Rover Kits
Tersus David
GNSS Receiver
The Tersus David is a cost-efficient, palm-sized GNSS receiver A 4GB in-built memory makes it easy to save data for post process-
designed for UAVs, AGVs, and surveying applica�ons. Using an ing. The compact size, IP67-rated enclosure and external Bluetooth
external GNSS antenna, the free Tersus Survey App and post-pro- module alleviates most of the inconveniences encountered in field
cessing so�ware, the David GNSS receiver is a low-cost solu�on for work.
all survey applica�ons, including real-�me RTK posi�oning and
data collec�on for PPK.

Features
Seamless Integra�on with Mobile Phone
- Free survey App available
METER

Versa�le Communica�on & I/O Interface

- Easy connec�on to an external radio module for long range communica�ons
- Bluetooth module establishes wireless connec�on in seconds

Wide Range of Applica�ons

- Paired with a smartphone, the David GNSS receiver can
operate as a base, rover and GIS data collector Tersus David RTK, Paired with Smartphone,
Enable CM-level Accuracy.

Convenient Connec�on
IP67
- Supports Ntrip protocols for receiving CORS differen�al data
- Rugged casing and IP67-rated enclosure to support opera�ons
- Tersus Ntrip Caster service available for the connec�on of two or in harsh field environments
more David GNSS receivers
Easy-to-use So�ware & App
Mul�-GNSS (GPS L1/L2, GLONASS L1/L2, BeiDou B1/B2) - Intui�ve so�ware turns any Android phone or pad into an
advanced field controller for David GNSS receiver.
- Powered by the Tersus GNSS OEM board, David GNSS receiver
provides high-precision posi�oning performance. - MicroSurvey FieldGenius supports Tersus David.

David GNSS Receiver - Base & Rover Kits

- Rover Kit Mobile Mode
- Rover Kit with 2W Radio Sta�on
- Base Kit Mobile Mode
- Base Kit with 2W Radio Sta�on
- Base Kit with 30W Radio Sta�on

Visit our website www.tersus-gnss.com for more details.

Working Modes
Rover + CORS
GNSS Satellites

Differen�al Data
GNSS Signals
High -percision Posi�oning

GNSS Singals Rover

Network(3G/4G)
Differen�al Data

Illustration
CORS

High-precision Posi�oning

David Smartphone Differen�al Data

USB Cable
GNSS Receiver （controller）
（Rover） Bluetooth 3G/4G

CORS

Differen�al Data Flow Chart

Base + Rover + Tersus Ntrip Caster

GNSS Satellites

Differen�al Data
GNSS Signals
High -percision Posi�oning

GNSS Singals Rover

Network(3G/4G) Network(3G/4G)
Differen�al Data Differen�al Data
Tersus Ntrip Caster Illustration
Base

Differen�al Data

USB Cable
David Smartphone Differen�al Data
Bluetooth
GNSS Receiver （controller base）
（Base） 3G/4G

High-precision Posi�oning
Tersus Ntrip Caster

David Smartphone Differen�als Data

USB Cable
GNSS Receiver （controller rover）
（Rover） Bluetooth 3G/4G

Differen�al Data Flow Chart

Base + Rover + Radio

GNSS Satellites

GNS
S Sig
nals

GNSS Singals

High -percision Posi�oning

al Data
Differen�

Rover

Base
Illustration

High-precision Posi�oning

David Differen�al Data David Smartphone

USB Cable
GNSS Receiver GNSS Receiver （controller）
（Base） Radio （Rover） Bluetooth

Flow Chart

Static Surveying
GNSS Satellites

GNSS Singals

GN
SS S
GN ing
SS als
Sin
gal
s

David GNSS Receiver David GNSS Receiver David GNSS Receiver

Illustration

Raw observa�ons
David
GNSS Receiver

David Raw observa�ons RINEX

GNSS Receiver

Raw Files PC RINEX Post Processing

David
Raw observa�ons
GNSS Receiver
Flow Chart
Specifications
Signal Tracking Ini�aliza�on (typical) <10s
GPS L1/L2 Ini�aliza�on Reliability >99.9%
GNSS GLONASS L1/L2 Electrical
BeiDou B1/B2 Input Voltage 5V ~ 12V DC
Positioning Power Consump�on 3.2W
Single Point Posi�oning Accuracy (RMS) Data
Horizontal 1.5m Storage 4GB in-built Memory
Ver�cal 3.0m Correc�on RTCM2.3/3.x, CMR, CMR+
Real Time Kinema�c (RMS) Max. Update Rate 20Hz
Horizontal 10mm+1ppm Communication
Ver�cal 15mm+1ppm Serial Ports RS-232 x 2
Post Processed Kinema�c (RMS) USB Ports USB 2.0 device x1
Horizontal 10mm+1ppm Physical
Ver�cal 15mm+1ppm Size 104x65x31mm
Sta�c Post Processing (RMS) 250g (David only)
Weight
Horizontal 3mm + 0.5ppm 360g (David + BT+PW/USB Cable)
Ver�cal 5mm + 0.5ppm Ac�ve Antenna Input Impedance 50Ω
Observation (zenith direction) Antenna Connector SMA female x1
C/A Code 10cm COM Baud Rate Up to 921600bps
P Code 10cm Opera�ng Temperature -40℃ ~ + 85℃
Carrier Phase 1mm Dustproof & Waterproof IP67
Performance Optional Accessory
Time to First Fix 2W 460MHz
Radio
Cold Start <50s 30W 460MHz
Warm Start <30s Ba�ery Ba�ery bank
Timing Accuracy (RMS) 20ns Software Support
Velocity Accuracy (RMS) 0.03m/s Tersus Nuwa
MicroSurvey FieldGenius

Nuwa App
Features
- Supports Bluetooth/USB connec�on - Configures Base, Rover and Sta�c Survey
- Graphical Interface for surveying and stakeout - Various built-in tools
- Data Management (import/export mul�ple formats) - Supports background map (online/import)
 Tersus GNSS Inc.
Affordable Centimeter Precision for Everyone

Tersus is a leading GNSS RTK solu�on provider. Our engineers have been pioneers in the design of GNSS products to support
high-precision posi�oning applica�ons.

Our products include GNSS RTK & PPK OEM boards and receivers, as well as integrated solu�ons such as the David GNSS Receiv-
er, NeoRTK, MatrixRTK, GNSS-aided Iner�al Naviga�on System, and AutoSteer System.

Designed for easy and rapid integra�on, our GNSS solu�ons offer cen�meter-level posi�oning accuracy and flexible interfaces
for a variety of applica�ons including: unmanned aerial vehicle (UAVs), surveying, mapping, construc�on engineering, and
precision agriculture.

To learn more, visit www.tersus-gnss.com

Sales inquiry : sales@tersus-gnss.com
Technical support : support@tersus-gnss.com

Descrip�ons, specifica�ons and related materials are subject to change.

©2018 Tersus GNSS Inc. All rights reserved.