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LS20032 데이터시트 PDF




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부품번호 LS20032 기능
기능 GPS smart antenna module
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LS20032 데이터시트, 핀배열, 회로
Product name
LS20030
LS20031
LS20032
LS20033
Description
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Version
GPS smart antenna module/USB,9600BPS,30x30mm
GPS smart antenna module/TTL,9600BPS,30x30mm
GPS smart antenna module/RS232,9600BPS,30x30mm
1.3
GPS smart antenna module/TTL,9600BPS,35x16mm
Datasheet of GPS smart antenna module, LS20030~3
1 Introduction
LS20030~3 series products are complete GPS smart antenna receivers, including an
embedded antenna and GPS receiver circuits, designed for a broad spectrum of OEM system
applications. The product is based on the proven technology found in LOCOSYS 66 channel GPS
SMD type receivers MC-1513 that use MediaTek chip solution. The GPS smart antenna will acquire
up to 66 satellites at a time while providing fast time-to-first-fix, one-second navigation update and
low power consumption. It can provide you with superior sensitivity and performance even in urban canyon
and dense foliage environment. Its far-reaching capability meets the sensitivity requirements of car
navigation as well as other location-based applications.
This module supports hybrid ephemeris prediction to achieve faster cold start. One is self-generated
ephemeris prediction that is no need of both network assistance and host CPU’s intervention. This is valid for
up to 3 days and updates automatically from time to time when GPS module is powered on and satellites are
available. The other is server-generated ephemeris prediction that gets from an internet server. This is valid for
up to 14 days. Both ephemeris predictions are stored in the on-board flash memory and perform a cold start
time less than 15 seconds.
© 2006 LOCOSYS Technology Inc.
Page 1/20




LS20032 pdf, 반도체, 판매, 대치품
4 GPS receiver
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Chip
MediaTek MT3339
Frequency
L1 1575.42MHz, C/A code
Channels
Support 66 channels (22 Tracking, 66 Acquisition)
Update rate
1Hz default, up to 10Hz
Hot start (Open Sky)
< 1s (typical)
Acquisition Time
Cold Start (Open Sky)
32s (typical) without AGPS
<15s (typical) with AGPS (hybrid ephemeris prediction)
Position Accuracy
Autonomous
SBAS
3m (2D RMS)
2.5m (depends on accuracy of correction data)
Datum
WGS-84 (default)
Max. Altitude
< 50,000 m
Max. Velocity
Protocol Support
< 515 m/s
NMEA 0183 ver 3.01
9600 bps(1), 8 data bits, no parity, 1 stop bits (default)
1Hz: GGA, GLL, GSA, GSV, RMC, VTG
Note 1: Both baud rate and output message rate are configurable to be factory default.
5 Software interface
5.1 NMEA output message
Table 5.1-1 NMEA output message
NMEA record
Description
GGA
Global positioning system fixed data
GLL
Geographic position - latitude/longitude
GSA
GNSS DOP and active satellites
GSV
GNSS satellites in view
RMC
Recommended minimum specific GNSS data
VTG
Course over ground and ground speed
GGA--- Global Positioning System Fixed Data
Table 5.1-2 contains the values for the following example:
$GPGGA,053740.000,2503.6319,N,12136.0099,E,1,08,1.1,63.8,M,15.2,M,,0000*64
Table5.1- 2 GGA Data Format
Name
Example
Units
Description
Message ID
$GPGGA
GGA protocol header
UTC Time
053740.000
hhmmss.sss
Latitude
2503.6319
ddmm.mmmm
© 2006 LOCOSYS Technology Inc.
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LS20032 전자부품, 판매, 대치품
Message ID
$GPGSV
Total number of messages1 3
Message number1
1
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
886-2-8698-3698
886-2-8698-3699
www.locosystech.com
GSV protocol header
Range 1 to 4
Range 1 to 4
Satellites in view
12
Satellite ID
28
Channel 1 (Range 01 to 196)
Elevation
81 degrees Channel 1 (Range 00 to 90)
Azimuth
285 degrees Channel 1 (Range 000 to 359)
SNR (C/No)
42 dB-Hz Channel 1 (Range 00 to 99, null when not tracking)
Satellite ID
20
Channel 4 (Range 01 to 32)
Elevation
51 degrees Channel 4 (Range 00 to 90)
Azimuth
077 degrees Channel 4 (Range 000 to 359)
SNR (C/No)
46 dB-Hz Channel 4 (Range 00 to 99, null when not tracking)
Checksum
*73
<CR> <LF>
End of message termination
1. Depending on the number of satellites tracked multiple messages of GSV data may be required.
RMC---Recommended Minimum Specific GNSS Data
Table 5.1-9 contains the values for the following example:
$GPRMC,053740.000,A,2503.6319,N,12136.0099,E,2.69,79.65,100106,,,A*53
Table 5.1-9 RMC Data Format
Name
Example
Units
Description
Message ID
$GPRMC
RMC protocol header
UTC Time
053740.000
hhmmss.sss
Status
A
A=data valid or V=data not valid
Latitude
2503.6319
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12136.0099
dddmm.mmmm
E/W Indicator
E
E=east or W=west
Speed over ground
Course over ground
2.69
79.65
knots True
degrees
Date 100106 ddmmyy
Magnetic variation
degrees
Variation sense
E=east or W=west (Not shown)
Mode
A
A=autonomous, D=DGPS, E=DR, N=Data not valid,
R=Coarse Position, S=Simulator
Checksum
*53
<CR> <LF>
End of message termination
© 2006 LOCOSYS Technology Inc.
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