GPS-08975

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 Product name Description LS20030 GPS smart antenna module/USB,9600BPS,30x30mm LS20031 GPS smart antenna module/TTL,9600BPS,30x30mm LS20032 GPS smart antenna module/RS232,9600BPS,30x30mm LS20033 GPS smart antenna module/TTL,9600BPS,35x16mm Version 1.3 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. Page 1/20 © 2006 LOCOSYS Technology Inc. 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 2 Features












3 MediaTek high sensitivity solution Support 66-channel GPS Low power consumption Fast TTFF at low signal level Built-in 12 multi-tone active interference canceller Free hybrid ephemeris prediction to achieve faster cold start Built-in data logger Up to 10 Hz update rate Capable of SBAS (WAAS, EGNOS, MSAS, GAGAN) Support Japan QZSS Indoor and outdoor multi-path detection and compensation Build-in micro battery to reserve system data for rapid satellite acquisition (not in LS20033) LED indicator for GPS fix or not fix (not in LS20033) Application


Personal positioning and navigation Automotive navigation Marine navigation Fig 3-1 System block diagram of LS20030 Page 2/20 © 2006 LOCOSYS Technology Inc. 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 Fig 3-2 System block diagram of LS20031 Fig 3-3 System block diagram of LS20032 Fig 3-4 System block diagram of LS20033 Page 3/20 © 2006 LOCOSYS Technology Inc. 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 4 GPS receiver 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) Acquisition Time < 1s (typical) 32s (typical) without AGPS Cold Start (Open Sky)