NMEA Reference Manual
SiRF Technology, Inc.148 East Brokaw RoadSan Jose, CA 95112 U.S.A.Phone: +1 (408) 467-0410Fax: +1 (408) 467-0420www.SiRF.com
1050-0042
January 2005, Revision 1.3
SiRF, SiRFstar, and SiRF plus orbit design are registered in the U.S. Patent and Trademark Office. This document contains information on a product under development at SiRF. The information is intended to help you evaluate this product. SiRF reserves the right to change or discontinue work on this product without notice.
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Copyright ? 1996-2005 SiRF Technology, Inc. All rights reserved.
No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or by any information storage or retrieval system without the prior written permission of SiRF Technology, Inc. unless such copying is expressly
permitted by United States copyright law. Address inquiries to Legal Department, SiRF Technology, Inc., 148 East Brokaw Road, San Jose, California 95112, United States of America.
About This Document
This document contains information on SiRF products. SiRF Technology, Inc. reserves the right to make changes in its products, specifications and other information at any time without notice. SiRF assumes no liability or responsibility for any claims or damages arising out of the use of this document, or from the use of integrated circuits based on this document, including, but not limited to claims or damages based on infringement of patents, copyrights or other intellectual property rights. SiRF makes no warranties, either express or implied with respect to the information and specifications contained in this document. Performance characteristics listed in this data sheet do not constitute a warranty or guarantee of product performance. All terms and conditions of sale are governed by the SiRF Terms and Conditions of Sale, a copy of which you may obtain from your authorized SiRF sales representative.
Getting Help
If you have any problems contact your SiRF representative or call or send an e-mail to the SiRF Technology support group: phone+1 (408) 467-0410e-mail
support@sirf.com
NMEA Reference Manual—January 2005
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.Output Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GGA —Global Positioning System Fixed Data. . . . . . . . . . . . . . . . . .GLL—Geographic Position - Latitude/Longitude. . . . . . . . . . . . . . . .GSA—GNSS DOP and Active Satellites. . . . . . . . . . . . . . . . . . . . . . .GSV—GNSS Satellites in View . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MSS—MSK Receiver Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RMC—Recommended Minimum Specific GNSS Data. . . . . . . . . . . .VTG—Course Over Ground and Ground Speed . . . . . . . . . . . . . . . . .ZDA—SiRF Timing Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150—OkToSend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.Input Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transport Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NMEA Input Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100—SetSerialPort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix1-11-21-31-41-51-51-61-71-71-82-12-12-22-2
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iv101—NavigationInitialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3102—SetDGPSPort. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4103—Query/Rate Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5104—LLANavigationInitialization . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6105—Development Data On/Off. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6106—Select Datum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7MSK—MSK Receiver Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8
NMEA Reference Manual—January 2005
Figures
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NMEA0183-GPS-参考手册
