AA003257-G Navman Wireless, AA003257-G Datasheet - Page 9

• Manufacturer Part Number: AA003257-G
• Description: DEV KIT FOR JUPITER 32XLP
• Manufacturer: Navman Wireless
• Type: Receiver, GPSr

Specifications of AA003257-G

• Frequency: 1575.42MHz
• For Use With/related Products: Jupiter 32 XLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 943-1001

3.7 Sensitivity
Sensitivity of the Jupiter 32 xLP is measured assuming a system noise value of 3 dB. The
sensitivity values are as follows:
3.8 Dynamic constraints
The Jupiter 32 xLP receiver is programmed to deliberately lose track if any of the following limits
is exceeded:
3.9 Position and velocity accuracy
The position and velocity accuracy of the Jupiter 32 are shown in Table 3-3, assuming full
accuracy C/A code. These values are the same in normal operation and when Adaptive
TricklePower is active.
4.0 Multi-mode aiding
Multi-mode aiding technology makes navigation information available to GPS devices when
enough Satellite Vehicles (SVs) are not visible due to obstruction. In autonomous operation
mode, the GPS receiver requires a signal level of 28 dBHz or higher in four or more SVs to
download ephemerides. This requires an uninterrupted full 30 seconds of data reception from
each SV. If the data isn’t received in full, the ephemeris data collection has to start again at the
next cycle.
The type of multi-mode aiding currently supported by the Jupiter 32 xLP is Ephemeris Push.
This feature supports live ephemeris data to be downloaded from application servers that
allows hot start performance at all times including in weak conditions and moving start ups. The
ephemeris would typically be valid for 4 hours until the live ephemeris is downloaded or new
ephemeris data is provided.
To use with this Ephemeris Push, the live ephemeris data is collected at application servers and
then transmitted to the GPS receiver through a network connection. An application note about
Ephemeris Push is in preparation and will be available at a later date.
LA000267D © 2008 Navman Wireless OEM. All rights reserved. Proprietary information and specifications subject to change without notice.
velocity:
acceleration: 4 G (39.2 m/s
vehicle jerk: 5 m/s
altitude:
acquisition – cold start
acquisition – hot start
500 m/s max
18 000 m max (referenced to MSL)
Parameter
navigation
tracking
3
* position error 0% and under normal open sky
conditions
** In 3D Kalman filtered mode in steady state oen sky
conditions
max
Table 3-3: Position and velocity accuracy
horizontal (2 dRMS)
velocity (heading)**
velocity (speed)**
horizontal CEP*
2
vertical VEP*
) max
Parameter
Table 3-2: Sensitivity
Signal strength
–144 dBm
–155 dBm
–157 dBm
–159 dBm
< 0.01m/s
< 0.01
Value
2.5 m
5.5 m
2.0 m
o
26 dBHz
15 dBHz
13 dBHz
10 dBHz
C/N
0