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GNS1001 Schematic ( PDF Datasheet ) - GNS

Teilenummer GNS1001
Beschreibung GPS Module
Hersteller GNS
Logo GNS Logo 




Gesamt 24 Seiten
GNS1001 Datasheet, Funktion
GPS Module
GNS 1001
Datasheet V1.2
confidential information preliminary specification
1 INTRODUCTION
The GNS1001 module utilizes the new generation MediaTek MT3339 GPS chip.The navigation
performance and accuracy is further improved by using correction data from SBAS (WAAS, EGNOS,
GAGAN, MSAS),QZSS or connectivity to DGPS(RTCM format).
First Fixes after just a few seconds are achieved with the help of A-GPS using EPOTM ( Extended
Prediction Orbit) and the EASYTM “self generated orbit prediction” algorithm. EASYTM (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 module in power sensitive, battery
supplied applications. The new AlwaysLocateTM 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 49mW@ 3.3V) and internal voltage regulator makes it easy to
run the module with various power supplies and allows direct connection to LiIon batteries.
GNS1001 offers the industry’s highest level of navigation sensitivity up to -165dBm. It has superior
dynamic performance at high velocity and provides effective protection against interference signals
using MTAICTM ( 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 AlwaysLocateTM 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.
© GNS-GmbH 2012
V 1.2, Mar 13th 2013
1






GNS1001 Datasheet, Funktion
GPS Module
GNS 1001
Datasheet V1.2
confidential information preliminary specification
AlwaysLocateTM feature provides an optimized overall GPS system power consumption in
tracking mode under open sky conditions. Always Locate is an intelligent control of periodic
mode. Depending on the environment and motion conditions, GNS1001 can adjust the
on/off time to achieve balance of positioning accuracy and power consumption. The best
power saving will be made under good reception in stationary mode. Critical reception
conditions and dynamic movements will need full activity of the GPS engine which causes
nominal power requirements.
3.4 Logger function
GNS1001 provides an autonomous logger function that automatically stores position information in
an internal 128kB flash memory. A complete tracking unit can be realized without any external CPU
or memory. With AlwaysLocateTM data logging can be achieved up to 32-hrs under standard
conditions.
The parameters for logging are programmable via the NMEA command interface. The following
parameters can be set to optimize content and logging time:
- logger rate
The commands for logger include:
- start logging
- stop logging
- erase memory
- readout memory
please refer to the NMEAcommandInterface manual for details.
Logger data rate
Logger data memory
Logger trigger
1/15
Internal Logger Function
1 1/s
128 kBytes
Programm
able
Flash memory
Logger can be triggered on
various events
© GNS-GmbH 2012
V 1.2, Mar 13th 2013
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6 Page









GNS1001 pdf, datenblatt
GPS Module
GNS 1001
Datasheet V1.2
confidential information preliminary specification
5 GPS characteristics
5.1 GPS characteristics
Parameter
Min
Frequency
SV Numbers
Typ
Max
general
1575.42
Unit
MHz
Note
GPS L1
GPS #1~32
DGPS
SBAS[WAAS,EGNOS, MSAS], RTCM
AGPS
Internal processing of predicted
orbit data. Service available via ftp.
6hrs prediction interval
Output data frequency
1/10
1
10 1/sec Configurable
Navigation&tracking sensitivity
-165
-167
dBm
Acquisition sensitivity
-148
dBm
autonomous
TTFF hot start
1 sec All SVs @-130dBm
TTFF warm start
33 sec All SVs @-130dBm
TTFF autonomous cold start
34 sec All SVs @-130dBm
Number of channels tracking
22
Number of acquisition channels
66
Dimension
9x12.7x2.1
mm
Tolerance is +/-0.2 mm
Weight
1g
Power consumption
GPS ACTIVE (acquisition)
19* mA NMEA frequency = 1/sec*
GPS ACTIVE (tracking)
15* mA NMEA frequency = 1/sec*
Backup current @ 3V
7 μA
*note: further power savings are possible using AlwaysLocate or periodical modes. Actual possible savings depend on use cases.
Position error CEP50
Position error CEP50
Velocity error
velocity error
Accuracy
-
3
-m
Without aid
-
2.5
-m
Using (SBAS)
-
0.1
- m/s
Without aid
-
0.05
- m/s
Using (SBAS)
Operation altitude
Operation velocity
Operation acceleration
ITAR limits
- 18,000 m
- - 515 m/s
- - 4G
12
© GNS-GmbH 2012
V 1.2, Mar 13th 2013

12 Page





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