GPS/GLONASS/GALILEO receiver
GNS 701
Datasheet
V1.4
preliminary specification
© GNS Electronics GmbH 2019
V 1.4, Apr 1
st
2019
1
1 INTRODUCTION
GNS701 is a small autonomous GPS/GLONASS/GALILEO receiver, based upon the MediaTek
MT3333 single chip, available with a finely tuned, high-sensitivity patch ceramic antenna. The
receiver supports GPS and GLONASS and GALILEO simultaneously.
The navigation performance and accuracy is further improved by using correction data from SBAS
(WAAS, EGNOS, GAGAN, MSAS), QZSS or DGPS(RTCM).
First Fixes after just a few seconds are achieved with the help of A-GPS
using EPO
TM
(Extended Prediction Orbit) and the EASY
TM
“self generated
orbit prediction” algorithm. EASY
TM
(Embedded Assist System) does not
require any resources or assist data from the host.
The excellent low power design makes it easy to implement this
receiver in power sensitive, battery supplied applications. The new AlwaysLocate
TM
power
management feature will improve this behaviour additionally. It adaptively adjusts power
consumption depending on the environment and motion conditions, in order to achive a balance
between fix rate, power consumption and position accuracy.
Very low power requirements (typ 66mW@ 3.3V, tracking for GPS+GLONASS) and internal voltage
regulator makes it easy to run the receiver with various power supplies and allows direct connection
to LiIon batteries.
GNS701 offers the industry’s highest level of navigation sensitivity up to -165dBm
1
. It has superior
dynamic performance at high velocity and provides effective protection against interference signals
using MTAIC
TM
( Multi-tone active interference canceller). Up to 12 independent channel
interference continious wave jammers <-80dBm can be eliminated or reduced.
The embedded logger function LOCUS
with a 16-hrs on chip memory makes this GPS module a
complete track logger for many applications. With AlwaysLocate
TM
data logging can be achieved up
to 32-hrs under standard conditions.
In professional timing applications the outstanding high accuracy PPS (pulse per second) hardware
pin is used for synchronization to GPS second. Typical accuracy is 10ns.
1
note: Based on chip specifications
GPS/GLONASS/GALILEO receiver
GNS 701
Datasheet
V1.4
preliminary specification
© GNS Electronics GmbH 2019
V 1.4, Apr 1
st
2019
2
Features
• GLONASS and GPS and GALILEO simultaneously
• 99 acquisition-/ 33 tracking channels
• Ultra high tracking/navigation sensitivity: -165dBm
1
• Smart antenna: finely tuned 18x18x4mm ceramic antenna
• SBAS (WAAS,EGNOS,MSAS,GAGAN, QZSS) correction support
• A-GPS by EPO “Extended Prediction Orbit”
TM
enables 7/14days prediction
• 12 Multitone Active Interference Canceller (MTAIC) for GPS-in-band jammer rejection
• EASY
TM
: Self generated orbit prediction support
• AlwaysLocate
TM
: Intelligent Algorithm for power saving
• High accuracy 1PPS output
• NMEA-0183 or binary protocol
• High update rate (up to 10/s)
• Embedded logger function with 16hrs internal memory
• GPS current consumption (@3.3V):
Acquisition: 35mA Typical
Tracking: 22mA Typical
• Low backup current consumption 15uA, typical
• SMD type with stamp holes
• Small form factor: 19.5x19.5x7.2mm
• CE, FCC and RohS certified
1
note: Based on chip specifications