Mobilicom ltd. MSH-10 User Manual
User Manual
Page : 17 / 31
Item
Description
Receiver Type
GPS L1 C/A code
Accuracy
Position 2.5 m CEP
SBAS 2.0 m CEP
Acquisition
Cold start: 27 s
Aided start: < 3 s
Hot start: 1 s
Sensitivity
Tracking: –161 dBm
Cold start: –147 dBm
Hit start: –156 dBm
Timing Accuracy
RMS 30 ns
99% < 60 ns
Granularity 21 ns
Table 5: Embedded GPS Characteristics of SkyHopper Pro
6
TDMA
Time Division Multiple Access (TDMA) is a channel access method for shared medium networks. It
allows several units to share the same frequency channel by dividing the signal into different time
slots. The units transmit and receive on the same frequency in a synchronized manner. Every unit
transmits in its own dedicated time slots. On the other time slots said unit receives the transmission
sent by the other units that are members of the same network (which are also transmitting on their
own dedicated slots).
allows several units to share the same frequency channel by dividing the signal into different time
slots. The units transmit and receive on the same frequency in a synchronized manner. Every unit
transmits in its own dedicated time slots. On the other time slots said unit receives the transmission
sent by the other units that are members of the same network (which are also transmitting on their
own dedicated slots).
TDMA requires a synchronization system. The system is synchronized internally, externally or via GPS
(synchronization varies between topologies and method used).
(synchronization varies between topologies and method used).
The SkyHopper Pro unit uses TDMA regardless of the application type, PTP or PTMP.