Lanner LVC-5770 Manual do Utilizador descarregar pdf (Página 42)

Accessing the GPS Data

Appendix D

Embedded and Industrial Computing

Appendix D:

Accessing the GPS Data

from the LVC-5770

The LVC-5770 employs an onbard u-blox NEO-6Q GPS

module for vehicle tracking and navigation system. You

could read the GPS data through the RS-232 serial port.

It has the following listed key features and performance

ratings:

Receiver type 50 Channels

GPS L1 frequency, C/A Code

SBAS: WAAS, EGNOS, MSAS

Time-To-First-Fix (All satel-

lites at -130 dBm)

Cold Start: 26 s

Warm Start: 26 s

Hot Start: 1 s

Aided Starts: 1 s

Sensitivity Tracking &Navigation: •

-162dBm

Reacquisition: -160dBm•

Cold Start (without aid-•

ing): -148 dBm

Hot Start: -157 dBm•

Maximum Navigation

update rate

5Hz

Horizontal position ac-

curach (CEP, 50%, 24 hours

static, -130dBm, SEP:

<3.5m)

GPS: 2.5m

SBAS: 2.0m

Congurable Timepulse

frequency range

0.25 Hz to 1 kHz

Accuracy for Timepulse

signal

RMS: 30 ns

99%: <60 ns

Granularity: 21 ns

Compensated: 15 ns

Velocity accuracy 0.1m/s

Heading accuracy 0.5 degrees

Operational Limits Dynamics: less than and

equal to 4g

Altitude: 50,000m

Velocity: 500m/s (Assuming

Airborne <4g platform)

To access the GPS data, follow the following steps:

Select Programs from the Start menu on your windows

and open the Hyper Terminal program.

Choose COM4 from the Connection using drop-down

menu:

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