• ??ӭ?????й????????     
  • ?ղر?վ
  • |
  • ??ҪͶ??
  • ??ע???ǣ?
  •  ΢ ??
  • Cehui8.com ????????Ϣ??ҵ??һƷ???Ż?
???????| ???????| ר??̽??| 3S| ????б?| ???չ??| ??Ʒ????| ???淶| ????????| ???ñ???| ???????| ????| ??ַ??ȫ|?˲?|??̳
??ҳ > ר??̽?? > ????

??????GPS????ϸ?Ƚ?

2013-08-28 09:34:23????Դ: ?????̳
????
 1??       ???Ƿ?Χ??
????????ϵͳ?Ǹ????й??????????򵼺?ϵͳ?????Ƿ?Χ????Լ70°һ140°????γһ55°??GPS?Ǹ???ȫ???ȫ??򵼺?ϵͳ???ܹ?ȷ?????????κεص㡢?κ?ʱ????ͬʱ?۲⵽6-9??????(ʵ????????ܹ۲⵽11??)??
   
    2
???????????͹?????ԣ?
????????ϵͳ???ڵ?????ƽ????????2?ŵ???ͬ?????ǿ????ǵij???Ǿ?Լ60°??GPS????6?????ƽ????????24?????ǣ??????????55°??????????Ǿ?60°????????Ϊ׼ͬ????????Ƶ???һ??11Сʱ58?֡?
    
    3
????λԭ????
????????ϵͳ??????ʽ˫?????ά?????????????Ŀ???ϵͳ???㣬???û???ά??λ???ݡ?GPS?DZ???ʽα?뵥??????ά?????????û??豸?????????Լ???ά??λ???ݡ?????һ???????ֹ???ԭ??????????????????⣬һ???û???λ??ͬʱʧȥ?????ߵ??????ԣ????ھ??????൱????????һ?????????豸?????????????????????????????ϡ??۸?͹??ķ??洦?ڲ????ĵ?λ??
    
    4
????λ???ȣ?
????????ϵͳ??ά??λ????Լ??ʮ?ף???ʱ????Լ100ns??GPS??ά??λ????P??Ŀǰ????16m??ߵ?6m??C/A??Ŀǰ????25-100m??ߵ?12m????ʱ??????ǰԼ20ns??
    
    5
???û???????
????????ϵͳ??????????˫?????ѯ??--Ӧ??ϵͳ???û??豸?????ͬ??????֮?䲻??Ҫ???յ??????Ŀ???ϵͳ??ѯ???źţ???Ҫ???û??豸??ͬ?????Ƿ???Ӧ???źţ???????ϵͳ???û?????ȡ?????û????????ŵ??????ʡ?ѯ???ź????ʺ??û?????ӦƵ?ʡ???ˣ?????????ϵͳ???û??豸?????????޵ġ?GPS ?ǵ?????ϵͳ???û??豸ֻҪ???յ??????Ƿ????ĵ??????ļ??ɽ??в?ඨλ?????GPS???û??豸?????????޵ġ?
    
    6
????????????
?????е?????λ????ϵͳһ????????һ?????????Ŀ???ϵͳ?????ǵĹ?????????????һ???????Ŀ???ϵͳ????????????Ҫ??ܶ࣬??Ϊ??λ??????????????????û??豸??ɵġ?Ϊ???ֲ?????ϵͳ?????ԣ?GPS???ڷ?չ?Ǽʺ???????????????ʹ??һ????վ???ٺ?GPS???ǿ??Զ??????С???????һ??ϵͳ??ԭ?????ų??????ֿ????ԣ?һ?????Ŀ???ϵͳ????ϵͳ?Ͳ??ܼ????????ˡ?
    
    7
??ʵʱ?ԣ?
????һ???û??Ķ?λ????Ҫ?ͻ????Ŀ???ϵͳ?????Ŀ???ϵͳ??????û?????άλ??????֮???ٷ????û??????Ҫ????????ֹ??????һ?????أ??ټ???????ת???????Ŀ???ϵͳ?Ĵ?????ʱ???ӳپ͸????ˣ???˶??ڸ????˶??壬?ͼӴ??˶?λ????
 
???⣬????һ?????ǵ???ϵͳҲ??һЩ???????ص㣺
    1. “
???????ж?λ??ͨ??˫??????,?߱??Ķ???ͨѶ???ܾ???GPS?????߱??ġ?
    2. “
??????λ????һ?????
    3. “
?????ն˼۸?????Ԫ????
    4.
???ý????ն˲???????????վ
    5.
???????ĵĴ?ֻһ???ӾͿ??Է?????Ϣ
    
    
??ȻGPS?ѹ㷺Ӧ?ã???Ҳ??????????ȱ??????ΪһЩ????֮????
    1.
???ģ̫?????̫?ߣ????????Һ???Ч?£?????˹??ŷ?޵Ŀռ?־??ǵ??͵????ӡ?
    2. GPS
ֻ??????????ȴ?޷?ʵ??ͨ?Ź??ܣ???????????????????????û??????????????GPS?????????ܱ??˵Ŀ??ơ?    
    “
????һ????GPS????????Ҫ???????????棬һ?????Ǽ??????Ƶ?????GPS??һ???????͵Ķ?λϵͳ??ֻת???źţ??û????վͿ???????λ?ˣ??????????????ơ?????һ????˫??ģ????ж?λ????ͨ?ŵ?ϵͳ?????????????????ƣ?GPS?????????????Ƶľ????õ?ϵͳ???????翪?š??????й?????˵??ʹ?õ?GPS?ǿ?????ѽ????????źţ????????˲?????ŵ??֤???ʹ?ã???Ŀǰ???շѣ???û?г?ŵ??Զ???շѡ?
    
    
??????GPS?ڵ???ոձ?ʹ??ʱҪ??????һ????ö࣬????????????80???ĩ90?????????????GPSϵͳʱ????˵?GPS???ջ???Ҫ??????Ԫ?????Ҫ??ʮ????Ԫ??һ???????????????ڵ??û??ն˵ļ۸??DZ?GPS?Ͷ˵ļ۸?Ҫ??????GPS?۸?һ?㵼??ϵͳ?ڼ?ǧԪ????ң??߾???GPS????ʮ????Ԫ????Ҳ??ȡ????????û??ն?Ŀǰ??????Ԫ???ҡ?
    
    
??һ???????????????;???ص??Dz?һ???ģ?GPS?????һ??????????Ķ?λ???⣬??????ɳĮ??ں????ϡ????????????????????????????????????????????????????⣬???????û??ն?ʵ???Ǿ????շ????ܣ???GPSֻ???н??չ??ܣ???ͨ?????ղ?֪??λ?ã????????Ǿ????շ????ܣ????Ķ?λ??Ҫ????Ȼ???ٵõ?λ?ã?ͬʱ????λ?ÿ??ܴ?????Ҳ???Դ???????????ˣ?ʵ???ϱ????Ǿ???һ????λ??ͨ??˫?ع??ܵ??豸?????û?Ⱥ???Dz?һ???ģ????յij????Dz?һ???ġ?

????Ķ?