航站楼(lou)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)统(tong)(tong)(tong)(tong)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)统(tong)(tong)(tong)(tong)是航空(kong)交通(tong)重要的(de)(de)(de)(de)组成(cheng)部(bu)(bu)分之一(yi)，其(qi)主要作(zuo)用是为(wei)(wei)(wei)乘(cheng)客和(he)工(gong)作(zuo)人员(yuan)提(ti)供(gong)(gong)(gong)准(zhun)(zhun)(zhun)确(que)的(de)(de)(de)(de)时(shi)(shi)(shi)间(jian)信(xin)(xin)(xin)息(xi)，同时(shi)(shi)(shi)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)统(tong)(tong)(tong)(tong)要为(wei)(wei)(wei)其(qi)他子系(xi)统(tong)(tong)(tong)(tong)提(ti)供(gong)(gong)(gong)统(tong)(tong)(tong)(tong)一(yi)的(de)(de)(de)(de)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)信(xin)(xin)(xin)号(hao)，使(shi)(shi)各系(xi)统(tong)(tong)(tong)(tong)的(de)(de)(de)(de)定时(shi)(shi)(shi)集(ji)中同步，在(zai)(zai)整个机(ji)场(chang)系(xi)统(tong)(tong)(tong)(tong)中使(shi)(shi)用相(xiang)同的(de)(de)(de)(de)定时(shi)(shi)(shi)标(biao)准(zhun)(zhun)(zhun)。候机(ji)厅(ting)及(ji)(ji)售票厅(ting)位(wei)置(zhi)的(de)(de)(de)(de)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)可以为(wei)(wei)(wei)旅客提(ti)供(gong)(gong)(gong)准(zhun)(zhun)(zhun)确(que)的(de)(de)(de)(de)时(shi)(shi)(shi)间(jian)信(xin)(xin)(xin)息(xi)；各办公室内及(ji)(ji)其(qi)它(ta)停机(ji)场(chang)内的(de)(de)(de)(de)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)可以为(wei)(wei)(wei)工(gong)作(zuo)人员(yuan)提(ti)供(gong)(gong)(gong)准(zhun)(zhun)(zhun)确(que)的(de)(de)(de)(de)时(shi)(shi)(shi)间(jian)信(xin)(xin)(xin)息(xi)；向其(qi)它(ta)机(ji)场(chang)通(tong)信(xin)(xin)(xin)子系(xi)统(tong)(tong)(tong)(tong)提(ti)供(gong)(gong)(gong)的(de)(de)(de)(de)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)信(xin)(xin)(xin)息(xi)为(wei)(wei)(wei)飞(fei)机(ji)运行(xing)提(ti)供(gong)(gong)(gong)了(le)标(biao)准(zhun)(zhun)(zhun)的(de)(de)(de)(de)时(shi)(shi)(shi)间(jian)，保证(zheng)(zheng)了(le)机(ji)场(chang)通(tong)信(xin)(xin)(xin)系(xi)统(tong)(tong)(tong)(tong)运行(xing)的(de)(de)(de)(de)准(zhun)(zhun)(zhun)时(shi)(shi)(shi)，安全。时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子系(xi)统(tong)(tong)(tong)(tong)能(neng)(neng)够向机(ji)场(chang)全部(bu)(bu)通(tong)信(xin)(xin)(xin)子系(xi)统(tong)(tong)(tong)(tong)提(ti)供(gong)(gong)(gong)准(zhun)(zhun)(zhun)确(que)的(de)(de)(de)(de)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)信(xin)(xin)(xin)号(hao)。母钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)以GPS卫星定位(wei)系(xi)统(tong)(tong)(tong)(tong)所(suo)发(fa)的(de)(de)(de)(de)UTC时(shi)(shi)(shi)间(jian)为(wei)(wei)(wei)准(zhun)(zhun)(zhun)，辅以铷原子钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，在(zai)(zai)GPS信(xin)(xin)(xin)号(hao)丢失时(shi)(shi)(shi)，还(hai)能(neng)(neng)长时(shi)(shi)(shi)间(jian)为(wei)(wei)(wei)系(xi)统(tong)(tong)(tong)(tong)提(ti)供(gong)(gong)(gong)准(zhun)(zhun)(zhun)确(que)时(shi)(shi)(shi)间(jian)。母钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)向其(qi)对应的(de)(de)(de)(de)子钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)发(fa)送时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)信(xin)(xin)(xin)号(hao)；同时(shi)(shi)(shi)各路时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)信(xin)(xin)(xin)号(hao)均需上传至时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)统(tong)(tong)(tong)(tong)的(de)(de)(de)(de)监控中心，使(shi)(shi)之可以完成(cheng)对全场(chang)所(suo)有时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)工(gong)作(zuo)状(zhuang)态的(de)(de)(de)(de)监测和(he)控制，并可在(zai)(zai)相(xiang)应的(de)(de)(de)(de)管理(li)(li)客户(hu)机(ji)上完成(cheng)各种需要的(de)(de)(de)(de)管理(li)(li)及(ji)(ji)配置(zhi)功能(neng)(neng)．成(cheng)都(dou)引众成(cheng)立十五(wu)年来，取得国家(jia)和(he)成(cheng)都(dou)市(shi)各种成(cheng)果奖数(shu)(shu)十项(xiang)，有四(si)川省科学奖励证(zheng)(zheng)书，软(ruan)件企业认定证(zheng)(zheng)书。四(si)川数(shu)(shu)字(zi)时(shi)(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)批发(fa)

系统组成1、YZ-9811时间服务(wu)(wu)器YZ-9811时间服务(wu)(wu)器可通过(guo)(guo)(guo)北斗GPS信号获取标准(zhun)时间，通过(guo)(guo)(guo)NTP协(xie)议对局域网的(de)计(ji)算(suan)机(ji)、服务(wu)(wu)器或其(qi)他设备提供同(tong)(tong)步服务(wu)(wu)。产品(pin)已广泛应用于(yu)学(xue)校、交通、企业、公检法等部门。2、子钟(zhong)(zhong)数(shu)显钟(zhong)(zhong)内(nei)置(zhi)无线接(jie)收模块，可通过(guo)(guo)(guo)信号实现同(tong)(tong)步。每次(ci)上电(dian)自动同(tong)(tong)步，每日自动同(tong)(tong)步。其(qi)主要功能包括(kuo)：（1）通过(guo)(guo)(guo)与基站同(tong)(tong)步自动消除走时积累误差，无需人工(gong)调(diao)整(zheng)；（2）时分秒年(nian)月日星期显示(shi)，红色LED；（3）内(nei)置(zhi)电(dian)池，在停电(dian)情况(kuang)下，可保持内(nei)部时钟(zhong)(zhong)运行(xing)数(shu)周(zhou)；（4）采(cai)用EMI电(dian)源(yuan)滤波(bo)器，不受电(dian)源(yuan)波(bo)动影响。成都电(dian)子数(shu)字(zi)时钟(zhong)(zhong)设计(ji)引众子母钟(zhong)(zhong)在基准(zhun)信号正常(chang)的(de)情况(kuang)下，选配的(de)铷原(yuan)子钟(zhong)(zhong)，30年(nian)自走时误差不会超(chao)过(guo)(guo)(guo)3毫秒，精度高达20nS。

设(she)备选(xuan)型(xing)表(biao)序(xu)号名(ming)称说(shuo)明1北斗(dou)(dou)主(zhu)(zhu)时(shi)钟(zhong)(zhong)YZ-9820B母(mu)钟(zhong)(zhong)，2U,19英(ying)寸(cun)(cun)2GPS主(zhu)(zhu)时(shi)钟(zhong)(zhong)YZ-9820G母(mu)钟(zhong)(zhong)，2U,19英(ying)寸(cun)(cun)4时(shi)钟(zhong)(zhong)监测(ce)管(guan)(guan)理(li)系(xi)统软件系(xi)统5数字(zi)(zi)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)表(biao)盘指(zhi)针(zhen)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)，配(pei)合母(mu)钟(zhong)(zhong)使(shi)用(yong)(yong)(yong)6指(zhi)针(zhen)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)数码管(guan)(guan)/LED数字(zi)(zi)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)，配(pei)合母(mu)钟(zhong)(zhong)使(shi)用(yong)(yong)(yong)7无(wu)线(xian)(xian)(xian)转(zhuan)发(fa)器433MHz免(mian)申(shen)请(qing)频段(duan)(duan)，传输距离2000米(mi)8控(kong)制(zhi)器支持(chi)(chi)遥控(kong)器方式(shi)(shi)或墙壁嵌入式(shi)(shi)9天(tian)线(xian)(xian)(xian)及防(fang)雷(lei)模块根据现场情(qing)况选(xuan)择配(pei)置(zhi)不同长度(du)的卫星(xing)天(tian)线(xian)(xian)(xian)设(she)备选(xuan)型(xing)表(biao)序(xu)号名(ming)称说(shuo)明1北斗(dou)(dou)主(zhu)(zhu)时(shi)钟(zhong)(zhong)YZ-9820B母(mu)钟(zhong)(zhong)，2U,19英(ying)寸(cun)(cun)2GPS主(zhu)(zhu)时(shi)钟(zhong)(zhong)YZ-9820G母(mu)钟(zhong)(zhong)，2U,19英(ying)寸(cun)(cun)4时(shi)钟(zhong)(zhong)监测(ce)管(guan)(guan)理(li)系(xi)统软件系(xi)统5数字(zi)(zi)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)表(biao)盘指(zhi)针(zhen)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)，配(pei)合母(mu)钟(zhong)(zhong)使(shi)用(yong)(yong)(yong)6指(zhi)针(zhen)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)数码管(guan)(guan)/LED数字(zi)(zi)式(shi)(shi)子(zi)(zi)钟(zhong)(zhong)，配(pei)合母(mu)钟(zhong)(zhong)使(shi)用(yong)(yong)(yong)7无(wu)线(xian)(xian)(xian)转(zhuan)发(fa)器433MHz免(mian)申(shen)请(qing)频段(duan)(duan)，传输距离2000米(mi)8控(kong)制(zhi)器支持(chi)(chi)遥控(kong)器方式(shi)(shi)或墙壁嵌入式(shi)(shi)9天(tian)线(xian)(xian)(xian)及防(fang)雷(lei)模块根据现场情(qing)况选(xuan)择配(pei)置(zhi)不同长度(du)的卫星(xing)天(tian)线(xian)(xian)(xian)

成(cheng)(cheng)(cheng)(cheng)(cheng)都引众数(shu)(shu)(shu)(shu)(shu)字设(she)(she)备有限(xian)公司子(zi)(zi)母(mu)钟(zhong)系(xi)统(tong)部分客户案例1、雄安(an)新区(qu)学(xue)校数(shu)(shu)(shu)(shu)(shu)字子(zi)(zi)钟(zhong)项目(mu)(mu)数(shu)(shu)(shu)(shu)(shu)百台母(mu)钟(zhong)+子(zi)(zi)钟(zhong)，6个(ge)学(xue)校；2、大(da)(da)运会时(shi)(shi)钟(zhong)项目(mu)(mu)覆盖(gai)整个(ge)大(da)(da)运会场(chang)馆3、成(cheng)(cheng)(cheng)(cheng)(cheng)都市(shi)第(di)六医院同步(bu)时(shi)(shi)钟(zhong)项目(mu)(mu)4、邛(qiong)崃二医院子(zi)(zi)母(mu)钟(zhong)项目(mu)(mu)5、昆山东部医疗中心电(dian)子(zi)(zi)时(shi)(shi)钟(zhong)系(xi)统(tong)项目(mu)(mu)6、成(cheng)(cheng)(cheng)(cheng)(cheng)都天府国际(ji)机场(chang)子(zi)(zi)母(mu)钟(zhong)项目(mu)(mu)世(shi)界(jie)卫(wei)(wei)星(xing)(xing)导(dao)(dao)(dao)航(hang)发(fa)展中的(de)北斗卫(wei)(wei)星(xing)(xing)导(dao)(dao)(dao)航(hang)系(xi)统(tong)能够提供全(quan)天时(shi)(shi)、全(quan)天候、高精度(du)的(de)定(ding)(ding)位(wei)、导(dao)(dao)(dao)航(hang)和(he)授时(shi)(shi)服务(wu)，是重要的(de)空(kong)间信息(xi)基础设(she)(she)施(shi)。世(shi)界(jie)各主(zhu)要航(hang)天国家(jia)都十分重视卫(wei)(wei)星(xing)(xing)导(dao)(dao)(dao)航(hang)系(xi)统(tong)的(de)建(jian)设(she)(she)、应用和(he)发(fa)展。竞(jing)相(xiang)发(fa)展的(de)全(quan)球(qiu)卫(wei)(wei)星(xing)(xing)导(dao)(dao)(dao)航(hang)系(xi)统(tong)近(jin)40多年(nian)来(lai)，全(quan)球(qiu)卫(wei)(wei)星(xing)(xing)导(dao)(dao)(dao)航(hang)系(xi)统(tong)竞(jing)相(xiang)发(fa)展，呈现出GPS一路，GLONASS曲折前进，北斗分步(bu)迈进、伽(jia)利略踯躅前行的(de)态(tai)势。导(dao)(dao)(dao)航(hang)卫(wei)(wei)星(xing)(xing)在轨(gui)数(shu)(shu)(shu)(shu)(shu)量逐步(bu)增加(jia)，服务(wu)性(xing)能稳步(bu)提升，应用领(ling)域日益扩展，成(cheng)(cheng)(cheng)(cheng)(cheng)为人(ren)类社会不可或缺的(de)空(kong)间信息(xi)基础设(she)(she)施(shi)。系(xi)统(tong)状态(tai)：4大(da)(da)系(xi)统(tong)卫(wei)(wei)星(xing)(xing)在轨(gui)数(shu)(shu)(shu)(shu)(shu)量情况GPS系(xi)统(tong)建(jian)成(cheng)(cheng)(cheng)(cheng)(cheng)后，卫(wei)(wei)星(xing)(xing)数(shu)(shu)(shu)(shu)(shu)量相(xiang)对稳定(ding)(ding)；GLONASS建(jian)成(cheng)(cheng)(cheng)(cheng)(cheng)后由于各种原因，数(shu)(shu)(shu)(shu)(shu)量急剧(ju)下降，近(jin)年(nian)来(lai)，卫(wei)(wei)星(xing)(xing)数(shu)(shu)(shu)(shu)(shu)逐步(bu)增加(jia)；北斗系(xi)统(tong)2000年(nian)开(kai)始(shi)，发(fa)星(xing)(xing)、试验、组(zu)网；伽(jia)利略系(xi)统(tong)2005年(nian)开(kai)始(shi)，发(fa)星(xing)(xing)试验。根(gen)据计划，2020年(nian)左(zuo)右，4大(da)(da)全(quan)球(qiu)系(xi)统(tong)的(de)卫(wei)(wei)星(xing)(xing)数(shu)(shu)(shu)(shu)(shu)量都将达到(dao)30颗以上(shang)。成(cheng)(cheng)(cheng)(cheng)(cheng)都引众是子(zi)(zi)母(mu)钟(zhong)系(xi)统(tong)解决方案**，专注(zhu)卫(wei)(wei)星(xing)(xing)同步(bu)时(shi)(shi)钟(zhong)研发(fa)15年(nian)，专注(zhu)、专业成(cheng)(cheng)(cheng)(cheng)(cheng)就成(cheng)(cheng)(cheng)(cheng)(cheng)功(gong)的(de)事(shi)业。

产(chan)(chan)品(pin)性能(neng)、特点1、授(shou)时(shi)(shi)精度高；2、抗干扰能(neng)力(li)强；3、内置(zhi)守时(shi)(shi)模(mo)块；4、性价(jia)比高，应用(yong)；5、整体(ti)功耗小，采用(yong)无风扇设(she)计(ji)，运行(xing)(xing)可(ke)靠稳定(ding)；6、告(gao)别传统(tong)电(dian)压驱(qu)动，延长(zhang)(zhang)LED发(fa)光管的(de)寿命，保证系统(tong)长(zhang)(zhang)时(shi)(shi)间运行(xing)(xing)无明显发(fa)热、发(fa)烫现象；7、安装方(fang)便，施工简单，通电(dian)即可(ke)与标准背景时(shi)(shi)间同步(bu)；8、无需(xu)布设(she)室外天(tian)线，可(ke)以完(wan)全消除雷电(dian)天(tian)气对(dui)设(she)备的(de)破坏，无天(tian)线老(lao)化(hua)的(de)问题；9、内置(zhi)GPS接收模(mo)块、GPS北(bei)斗(dou)双模(mo)接收模(mo)块、CDMA授(shou)时(shi)(shi)模(mo)块，不用(yong)任何按键调节，自(zi)动获取GPS、北(bei)斗(dou)、CDMA时(shi)(shi)间，始(shi)终同步(bu)北(bei)京时(shi)(shi)间，无累积误差；10、显示(shi)精度高，视距较(jiao)长(zhang)(zhang)，显示(shi)醒(xing)目清晰，故障里黑(hei)屏不会对(dui)使用(yong)者产(chan)(chan)生(sheng)误导；成(cheng)都引(yin)众拥有丰富的(de)时(shi)(shi)钟(zhong)(zhong)系统(tong)同步(bu)生(sheng)产(chan)(chan)经(jing)验，服(fu)务全国客户超过1000家，可(ke)根据现场特殊要求提供定(ding)制(zhi)服(fu)务。四川数字(zi)时(shi)(shi)钟(zhong)(zhong)批发(fa)

成都引众的(de)子母钟(zhong)系统操作简单(dan)，免维护，适合无人值守，是智能(neng)化建设必备(bei)的(de)数(shu)字(zi)化设备(bei)。四川数(shu)字(zi)时钟(zhong)批发

部(bu)分客(ke)户案例1、雄安新区学校数(shu)字(zi)子钟(zhong)(zhong)(zhong)(zhong)(zhong)项目(mu)(mu)2、大运会时(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)项目(mu)(mu)3、成都(dou)市第六(liu)医(yi)(yi)院同(tong)步时(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)项目(mu)(mu)4、邛崃二医(yi)(yi)院子母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)项目(mu)(mu)5、昆山东部(bu)医(yi)(yi)疗中(zhong)心电子时(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)统(tong)项目(mu)(mu)6、成都(dou)天府国(guo)际机(ji)场(chang)子母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)项目(mu)(mu)。子母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)之母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)介绍母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)是具有(you)(you)较高精度(du)并能(neng)(neng)发出控制子钟(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)时(shi)(shi)间(jian)信(xin)(xin)号的(de)(de)(de)钟(zhong)(zhong)(zhong)(zhong)(zhong)表机(ji)构。早期是采(cai)(cai)用(yong)(yong)(yong)比一般(ban)机(ji)械钟(zhong)(zhong)(zhong)(zhong)(zhong)精度(du)高的(de)(de)(de)摆钟(zhong)(zhong)(zhong)(zhong)(zhong)作为母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)。为了保(bao)证摆钟(zhong)(zhong)(zhong)(zhong)(zhong)有(you)(you)较高的(de)(de)(de)走时(shi)(shi)精度(du)，采(cai)(cai)用(yong)(yong)(yong)电磁原理直接对(dui)摆周期性地(di)补充能(neng)(neng)量，以维持摆的(de)(de)(de)摆幅。上述母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)走时(shi)(shi)日(ri)差(见钟(zhong)(zhong)(zhong)(zhong)(zhong)表日(ri)差)可(ke)(ke)保(bao)持在(zai)(zai)1秒/日(ri)以内。随着科学技术的(de)(de)(de)发展，机(ji)械式(shi)母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)已(yi)不(bu)常(chang)用(yong)(yong)(yong)，现代主要采(cai)(cai)用(yong)(yong)(yong)石英母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)甚至(zhi)原子母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)，一般(ban)放在(zai)(zai)具有(you)(you)良(liang)好(hao)恒温防震条件的(de)(de)(de)控制室(shi)中(zhong)使(shi)用(yong)(yong)(yong)。母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)可(ke)(ke)以接收GPS卫星(xing)提供的(de)(de)(de)标(biao)(biao)准(zhun)UTC时(shi)(shi)间(jian)信(xin)(xin)号，自动(dong)按照当(dang)(dang)地(di)的(de)(de)(de)时(shi)(shi)区设置转化为当(dang)(dang)地(di)的(de)(de)(de)地(di)方(fang)时(shi)(shi)，也可(ke)(ke)以自动(dong)完(wan)成对(dui)闰年、润秒的(de)(de)(de)计算。通过(guo)接收卫星(xing)的(de)(de)(de)标(biao)(biao)准(zhun)时(shi)(shi)间(jian)信(xin)(xin)号可(ke)(ke)以保(bao)证母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)时(shi)(shi)间(jian)的(de)(de)(de)准(zhun)确性，在(zai)(zai)我国(guo)一些部(bu)门由于安全(quan)需要，都(dou)采(cai)(cai)用(yong)(yong)(yong)了GPS/北(bei)斗(dou)双模母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)，该母(mu)(mu)钟(zhong)(zhong)(zhong)(zhong)(zhong)不(bu)光可(ke)(ke)以接收GPS卫星(xing)时(shi)(shi)间(jian)信(xin)(xin)号，当(dang)(dang)GPS信(xin)(xin)号丢(diu)失或(huo)者出现较大误码时(shi)(shi)，系(xi)统(tong)可(ke)(ke)以自动(dong)判断并切换到具有(you)(you)中(zhong)国(guo)自主知识产权的(de)(de)(de)北(bei)斗(dou)卫星(xing)导航定位系(xi)统(tong)时(shi)(shi)间(jian)。如电信(xin)(xin)，电力(li)，等(deng)部(bu)门已(yi)经大规(gui)模使(shi)用(yong)(yong)(yong)该系(xi)统(tong)。四川数(shu)字(zi)时(shi)(shi)钟(zhong)(zhong)(zhong)(zhong)(zhong)批发

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