Stability of Data Flow Using 3,5g Internet for Gps Applications

8/20/2019 Stability of Data Flow Using 3,5g Internet for Gps Applications

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STABILITY OF DATA FLOW USING 3,5G INTERNET FOR

GPS APPLICATIONSlecturer PhD. en. Aurel!"n Stel!"n BUDA # Un!$er%!t& '( Or")e",

F"cult& '( Arch!tecture "n) C'n%truct!'n%

"%%!%t"nt PhD. en. An)reee" Fl'r!n" *OCEA # Techn!c"l Un!$er%!t&'( C!$!l En!neer!n Buch"re%t

"%%!%t"nt PhD. en. P"ul D"n!el DU+ITRU # Techn!c"l Un!$er%!t& '( C!$!l En!neer!n Buch"re%t

lecturer PhD. en. te("n SUBA # Un!$er%!t& '( Or")e", F"cult& '( Ș Arch!tecture "n) C'n%truct!'n%

"%%!%t"nt PhD. %tu). en. S'r!n NISTOR # Un!$er%!t& '( Or")e",F"cult& '( Arch!tecture "n) C'n%truct!'n%

"%%!%t"nt PhD. %tu). en. N'rert S-"'lc% SUBA # Un!$er%!t& '( Or")e", F"cult& '( Arch!tecture "n) C'n%truct!'n%

Abstract: This paper will try to highlight the possibility of boosting the data transfer ratenecessary for GPS applications (both RTK and VRS) by using 3,G !obile technology" #t isbased on the well$%nown fact that datatrans!ission is not the !ain priority of !obiletelephony pro&iders" GPS technology users donot represent currently a !a'or interest for theseco!panies, and conseuently, data signal

reception in isolated areas is al!ost i!possible"#n this paper, we will try to gi&e proof of the fact that using net generation co!ponents, we canha&e a stability o&er the data flow, and also that we can ha&e access to differential corrections inareas where this was i!possible before"

Keywords: sensors, GPS, differential data corrections


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1. INTRODUCTION

In the "%t &e"r%, l'"l '%!t!'n!n techn'l'!e%/e%ec!"ll& th'%e r'$!)e) & the A0er!c"n NA1STAR2GPS %&%te0"n) Ru%%!"n GLONASS %&%te0 ec"0e "$"!l"le !n 'ur c'untr&.B"%e) 'n the%e %&%te0, 0ult!le "l!c"t!'n% h"$e een )e$el'e)!n $"r!'u% "l!c"t!'n (!el)% l!4e n"$!"t!'n /l"n), %e", r!$er 'r "!r,tr"n%'rt"t!'n, l"n) 0e"%ure0ent% /%ur$e&!n, Ge'r"h!cIn('r0"t!'n S&%te0%, Ge')&n"0!c%, C"rt'r"h&, t'ur!%0 etc.

Gl'"l '%!t!'n!n %&%te0% r'$!)e 0ult!le ene(!t% "n)'%%!!l!t!e% th"t c'rre%'n) t' the h!he%t %t"n)"r)% )e0"n)e) &n"$!"t!'n ur'%e%. U%!n %uch %&%te0%, the "%'lute '%!t!'n!n

"ccur"c& !% "'ut 67 t' 65 0eter%. The "ccur"c& !% !n(luence)e%ec!"ll& & err'r% )ue t' the %"tell!te 'r!t, the %"tell!te "n)rece!$er cl'c4 err'r%, err'r% )ue t' the !'n'%here "n) tr''%here.The "ccur"c& '( '%!t!'n!n 0"& e !0r'$e) & u%!n rel"t!$e'%!t!'n!n, " 0eth') u%e) ('r e')et!c ur'%e%. Th!% 0eth')!n$'l$e% the u%e '( %ule0ent"r& !n('r0"t!'n, c"lle) )!((erent!"lc'rrect!'n%. Fre8uentl& u%e) rel"t!$e '%!t!'n!n 0eth')% "re the4!ne0"t!c /RT9 0eth') "n) )!((erent!"l /DGPS 0eth').

T"4!n !nt' "cc'unt the 0'0ent :hen the re%ult% /!.e.

'%!t!'n% "re 't"!ne), :e c"n )!%t!nu!%h t:' t&e% '( 4!ne0"t!c'%!t!'n!n RT9 '%!t!'n!n "n) ;'%t r'ce%%!n< 4!ne0"t!c'%!t!'n!n. The '%t r'ce%%!n 4!ne0"t!c 0eth') !% " '%!t!'n!n0eth') :here the re%ult% "re 't"!ne) "t " cert"!n t!0e "(ter the'%er$"t!'n% :ere c"rr!e) 'ut. In the c"%e '( re"l2t!0e '%!t!'n!n,the D!((erent!"l GPS /DGPS 0eth') 0"& e u%e) !( :!th!n the:'r4!n "re" :e "re r'$!)e) :!th %!n"l% th"t c'nt"!n )!((erent!"lc'rrect!'n%, )"t" th"t "ll':% the 4!ne0"t!c )eter0!n"t!'n '( '%!t!'n:!th %u((!c!ent "ccur"c&. In r"ct!c"l u%e, the Re"l2T!0e 9!ne0"t!c%

0eth') !% re(erre), ut th!% %'lut!'n re8u!re% re"l t!0e )"t" tr"n%(er et:een " "%e rece!$er "n) the 0'$!n rece!$er/% /"l%' re((ere) t'"% 0'!le 'r r'$er rece!$er. F'r re"l2t!0e n"$!"t!'n, u%er% nee) t'4n': :here the& "re n':, r"ther th"n :here the& :ere %'0e t!0e !nthe "%t.

The tr"n%(er '( )!((erent!"l )"t" c'rrect!'n%/DGNSS=RT9 (r'0 re(erence %t"t!'n% net:'r4 t' u%er% c"n e)'ne !n $"r!'u% :"&%. The 0'%t c'00'n "re tr"n%(er $!" r")!'tr"n%0!tter%, 0'!le c'00un!c"t!'n %&%te0% %uch "%


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GS+=GPRS=S+S 'r 0'!le Internet tr"n%0!%%!'n. The ('ll':!nch"ter :!ll !$e "n !n%!)e t' the%e 0eth')%.

2. TRANSMISSION OF DIFFERENTIAL DATA CORRECTIONS

The ('ll':!n "rt :!ll re%ent t:' :"&% '( h':)!((erent!"l c'rrect!'n% c"n e tr"n%0!tte)

*"+" Trans!ission of differential data corrections using radio wa&es

The 0'%t c'00'n 0eth') '( tr"n%0!tt!n the )!((erent!"l)"t" c'rrect!'n% !% :!th the hel '( the U>F r")!' "n) /"n)

%'0et!0e% the 1>F r")!' "n), :!th the )"t" (l': r"te '( ?@77 %.The 0"!n ")$"nt"e '( th!% 0eth') !% th"t the%e electr'0"net!c:"$e% c"n tr"$el " l'n )!%t"nce, thu% "ll':!n the c'$er"e '( ":!)er "re" :here the%e )!((erent!"l c'rrect!'n% c"n e rece!$e). The(re8uenc!e% ch'%en "re )een)ent 'n re%tr!ct!'n% !0'%e) & the'$ern0ent"l "enc!e%. We :'ul) l!4e t' h!hl!ht the e0!tt!n':er re%tr!ct!'n, )ue t' the ("ct th"t th!% h"% " )!rect !0"ct 'n the'%%!le )!%t"nce et:een the r'$er "n) tr"n%0!tter.

R")!' "%e) tr"n%0!%%!'n% h"$e 'ther %e$er"l %!n!(!c"nt

)!%")$"nt"e% :hen u%e) ('r DGPS '%!t!'n!n "n) n"$!"t!'n.F!r%t, r")!' h"% " $er& %h'rt )"t" tr"n%0!%%!'n r"ne l!0!te) t' l!ne '( %!ht /LOS et:een the "%e "n) r'$er r")!'%. Sec'n), the r")!':"$e% !n U>F c'00erc!"l "n) "re cr':)e) "n) n'!%& the "n) !%)e%!ne) ('r ul!c "n) there !% l"c4 '( "n e((ect!$e (re8uenc&re%'urce %h"r!n %tr"te& l!4e cellul"r techn'l'& t' "$'!) (re8uenc&c'll!%!'n. The ch"nnel %e"r"t!'n !n U>F c'00erc!"l "n) !% 'nl&6.5 9>- th"t !% 0uch %0"ller c'0"re) t' CDPD /Cellul"r D!!t"lP"c4et D"t" "n) GS+ /Gl'"l S&%te0 ('r +'!le re%ult!n !n l"rer

cr'%%2ch"nnel !nter(erence%.

The !nter(erence% )eter!'r"te thec'00un!c"t!'n 8u"l!t& %er!'u%l&, "n) le") t' e$en %0"ller r")!'e((ect!$e r"ne th"n LOS. In ur"n "re", :here the r")!' :"$een$!r'n0ent !% h"r%h, the r")!' e((ect!$e r"ne% "re u%u"ll& l!0!te)t' " (e: 4!l'0eter%. The c'$er"e !% "l%' re)uce) !n e'r"h!cre!'n% :!th h!ll% "n) 0'unt"!n%, "n) the e!%t!n ':er re%tr!ct!'n%0e"n th"t e$en !n 'en (!el)% :e :!ll h"$e t' )e"l :!th " le%%er :'r4!n r"ne th"n 0"&e )e%!re). Al%', r")!'2"%e) )"t" l!n4% :!ll"l:"&% %u((er (r'0 %h")':!n "n) %!n"l l'%%.


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*"*" Trans!ission of differential data corrections using !obile#nternet

Due t' the "n):!)th 0")e "$"!l"le & 0'!le h'ne'er"t'r% ('r the u%e '( )"t" tr"n%0!%%!'n, re%e"rcher% 0"n"e) t')e$el' " r't'c'l th"t "ll':% tr"n%0!%%!'n '( )!((erent!"l c'rrect!'n%t' GPS rece!$er% $!" 0'!le Internet. S!nce then, there !% " r':!n)e0"n) ('r the u%e '( th!% r't'c'l "n) !t% )e$el'0ent, "rtl& )uet' the ("ct th"t the u%e /"n) thu% %'0eh': the )e$el'0ent '( )"t" tr"n%0!tte) 'n r")!' :"$e% "re re%tr!cte) & '$ern"0ent"l"enc!e% /re%tr!ct!'n% re"r)!n the (re8uenc&, "0l!tu)e "n) %!n"l%trenht.

D!((erent!"l )"t" c'rrect!'n% "re tr"n%0!tte) $!" theInternet u%!n the NTRIP r't'c'l /Net:'r4 Tr"n%'rt '( RTC+ $!"Internet Pr't'c'l. Th!% r't'c'l :"% )e$el'e) & the Fe)er"l

Aenc& ('r C"rt'r"h& "n) Ge')e%& '( Ger0"n&. U%!n th!%r't'c'l, there "re three cl"%%e% '( 'ect% th"t "re c'00un!c"t!net:een e"ch 'ther

2 GPS %t"t!'n %er$er% th"t "%%ure )!((erent!"l c'rrect!'n%2 Tr"n%0!tter% th"t c'0ute )!((erent!"l )"t" c'rrect!'n% "n)

tr"n%0!t the0

2 U%er% th"t h"$e "cce%% t' the%e )!((erent!"l )"t" c'rrect!'n%.In 'r)er t' 't"!n )!((erent!"l )"t" c'rrect!'n%, the cl!ent

0u%t r'$!)e "n IP "))re%% "n) " "%%:'r), "n) !n return, thec"%ter :!ll tr"n%0!t the )"t" %tre"0 c'nt"!n!n the%e )!((erent!"lc'rrect!'n%. The c"%ter% "re 'er"t!n !n %t"n)"r) 0')e 'n >TTP'rt 7 /"n) %'0et!0e% 'n 'rt 676.

At the e!nn!n, )"t" :"% tr"n%0!tte) :!th the hel '( the 0'!le Internet u%!n the GPRS c'nnect!'n /Gener"l P"c4etR")!' Ser$!ce. In the ('ll':!n &e"r%, ne: :"&% :ere )e$el'e) t'

tr"n%0!t the )"t". The%e "re EDGE /Enh"nce) D"t" r"te% ('r GS+E$'lut!'n, CD+A777 /"l%' 4n':n "% I+T +ult!2C"rr!er /I+T2+C"n) U+TS /Un!$er%"l +'!le Telec'00un!c"t!'n% S&%te0 2 "ll '( the%e e!n th!r)2ener"t!'n /3G 0'!le telec'00un!c"t!'n%techn'l'!e%.

The GPRS techn'l'& tr"n%0!t% )"t" :!th the hel '( "0'!le h'ne 'r " 0')e0 !n " ("%t "n) e((!c!ent :"&. The 0'%t!0'rt"nt ch"r"cter!%t!c !% th"t 0'!le )e$!ce% u%!n GPRSc'nnect!'n% c"n e er0"nentl& c'nnecte) t' the Internet "% l'n"% the& "re !n the c'$er"e "re". Tr"n%(er r"te )!((er%, )een)!n 'n

http://en.wikipedia.org/wiki/3Ghttp://en.wikipedia.org/wiki/Mobile_telecommunicationshttp://en.wikipedia.org/wiki/Mobile_telecommunicationshttp://en.wikipedia.org/wiki/3G


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the ch'%en "c4"e, ut c"n re"ch " %ee) '( 66 4%, u%!n e!ht"cce%% ch"nnel% "t the %"0e t!0e. L"tel&, the )e$el'0ent h"%!ncl!ne) t':"r)% the EDGE "n) 3G techn'l'!e%.

EDGE /Enh"nce) D"t" R"te% ('r GS+ E$'lut!'n "ll':%"cce%% t' )"t" three t!0e% ("%ter th"n GPRS. It :'r4% "l'n%!)eGPRS techn'l'&, "n) !% 0"4!n "cce%% t' the0 )een)!n 'nc'$er"e. One ")$"nt"e !% th"t n' !nterrut!'n :!ll 'ccur !n the)"t" (l': :hen 0'$!n (r'0 "n "re" :!th EDGE c'$er"e !n "n"re" :!th GPRS c'$er"e "n) $!ce $er%". Un('rtun"tel&, )"t"tr"n%0!%%!'n %ee) c"nn't e "%%ure) :!th cert"!nt&, ec"u%e the)"t" (l': r"te !% )!$!)e) et:een u%er% '( the %"0e cell.

3G !% the "cr'n&0 ('r ;th!r) ener"t!'n 0'!le

techn'l'&


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e u%e). The )e%!n '( " )"t" tr"n%0!%%!'n %t"n)"r) 0u%t "tte0tt' 0!n!0!-e "n):!)th.

A c'0"ct tr"n%0!%%!'n /'r retr"n%0!%%!'n %t"n)"r) :!llhel Re"l2T!0e 9!ne0"t!c techn!8ue% "!n ("$'ur :!th u%er% :h''nl& :!%h t' urch"%e " r'$er un!t, %ett!n u !n the %ur$e&!n "re"'( "n ':n retr"n%0!%%!'n %&%te0, :here "cce%% t' the !nternet /"n)c'n%e8uentl&, t' )!((erent!"l c'rrect!'n% c"n e "%%ure) Su",767J.

D!((erent!"l u%e '( the Gl'"l P'%!t!'n!n S&%te0 /DGPS!nc'r'r"te% " re(erence %t"t!'n rece!$er "n) " r'$er rece!$er tr"c4!n " c'00'n %et '( %"tell!te% %!0ult"ne'u%l&.

When the t:' %t"t!'n% "re cl'%el& %!tu"te) /K 6740,

0"n& %"tell!te )een)ent err'r% c"ncel. I( the re(erence "n) r'$er rece!$er% "re c""le '( tr"c4!n c"rr!er h"%e "n) %eu)'r"ne0e"%ure0ent%, !t !% '%%!le t' re%'l$e the l'c"t!'n '( the r'$er %t"t!'n t' " (e: cent!0eter%. Re"l2T!0e 9!ne0"t!c '%!t!'n!n re(er%t' the c"%e :here the r'$er %t"t!'n l'c"t!'n !% )eter0!ne) !n the (!el):h!le the r'$er !% 0'$!n.

The )"t" l!n4 ('r0% "n e%%ent!"l c'0'nent '( " Re"l2T!0e 9!ne0"t!c %&%te0. Re"l2T!0e 9!ne0"t!c '%!t!'n!n re8u!re%reul"r /t&!c"ll& e$er& %ec'n) tr"n%0!%%!'n '( re(erence %t"t!'n

)"t" "c4et% "n) the!r recet!'n "t the r'$er %t"t!'n/%. D"t" l!n4't!'n% '(ten u%e) !n the (!el) !nclu)e the t&e% 0ent!'ne) !n there$!'u% ch"ter. O$!'u%l&, !n!t!"t!n "n) 0"!nt"!n!n the )"t" l!n4!% e%%ent!"l ('r the 0e"%ure0ent% t' e c"rr!e) 'ut, "n) "n& %'lut!'n)e$el'e) ('r th!% ur'%e :!ll enh"nce the "l!c"t!'n '%%!!l!t!e%'( RT9 '%!t!'n!n.

4. CASE STUDY

The c"%e %tu)& :"% er('r0e) !n B!h'r C'unt&, "t " tr'ut("r0 ne"r +e t!ș $!ll"e. The ch'%en l'c"t!'n rere%ent% " %ec!"l!ntere%t, ec"u%e the "re" :here the te%t :"% er('r0e) !%)'0!n"te) & h!ll%, :here"% the '!nt% h") t' e )eter0!ne) !n ")ere%%!'n "re". An'ther re"%'n ('r ch''%!n th!% re!'n :"% th"t:e c"rr!e) 'ut te%t 0e"%ure0ent% here e('re, "n) :e re"l!-e) th"t!n the %ec!(!e) "re" there !% n' GS+ c'$er"e "t "ll /"n),c'n%e8uentl&, n' "cce%% t' 0'!le )"t" c'$er"e "% :ell. F!ure 6


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%h':% the c'n(!ur"t!'n '( the "re" :ere the '%er$"t!'n% :erec"rr!e) 'ut.

ig"+" -./ of test area, indicating the recei&er positions

F'r the te%t, :e u%e) the %"0e )u"l (re8uenc& GPSrece!$er "% !n the re$!'u% 0e"%ure0ent "tte0t% /Tr!0le R@ :!thTSC c'ntr'ller, "n) the c''r)!n"te% :ere )eter0!ne) u%!n theRT9 '%!t!'n!n 0eth'). D!((erent!"l c'rrect!'n% :ere r'$!)e) &

RO+POS R'0"n!". The e%%ent!"l "rt '( the 0e"%ure0ent "n) the%tu)& !t%el( !% h': the%e )!((erent!"l c'rrect!'n% "re 't"!ne) e!ther u%!n "n etern"l 0')e0 th"t c'nnect% t' the c'ntr'ller $!"Bluet''th 'r u%!n " retr"n%0!%%!'n %&%te0, c'n%!%t!n '( " l"t', "0')e0 "n) " r")!' tr"n%0!tter.

Th!% "er :!ll re%ent the c"%e '( 0')e0 c'nnect!'n,u%!n t:' )!((erent 0')e0% # (!r%t, " %t"n)"r) ENFORA 0')e0 th"t!% !n%erte) )!rectl& !nt' the c'ntr'l un!t '( the Tr!0le R@, "n) then,"n etern"l 0')e0 /Tr!0le TDL 3G Cellul"r +')e0 th"t c'nnect%

$!" Bluet''th t' the c'ntr'l un!t.E"rl!er te%t% %h':e) /"n) current te%t% c'n(!r0e) th"tu'n %e$er"l c'nnect!'n "tte0t% u%!n the ENFORA 0')e0, :e("!le) t' e%t"l!%h "n& 4!n) '( c'nnect!'n t' the RO+POS net:'r4.Further0're, :e ne!ther 0"n"e) t' "cce%% "n& 4!n) '( 0'!letelec'00un!c"t!'n %!n"l /ne!ther GS+, n'r )"t" c'nnect!'n :!th'ther 4!n)% '( e8u!0ent "$"!l"le 'n the (!el) /0'!le h'ne%, ('r e"0le. F!ure %h':% the ("!le) c'nnect!'n "tte0t% :!th 'th)e$!ce% /ENFORA 0')e0 "n) 0'!le h'ne.


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ig"*" ailed connection atte!pts (.01R2 !ode! and phone)

A(ter the%e un%ucce%%(ul "tte0t%, :e 0'$e) the SI+c"r) (r'0 the ENFORA !ntern"l 0')e0 t' the Tr!0le TDL 3G

Cellul"r +')e0, "n) tr!e) t' e%t"l!%h " 0'!le )"t" c'nnect!'n. A(ter " (e: %ec'n)%, :e 0"n"e) t' et " %t"le c'nnect!'n.

ig"3" Successful connection using the eternal !ode!


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In F!ure 3 :e c"n '%er$e th"t !n "n "re" :here :e)'nt h"$e " GS+ c'nnect!'n :!th %t"n)"r) e8u!0ent, !t !% %t!ll'%%!le t' et "n Internet )"t" c'nnect!'n :!th G %!n"l u%!n th!%)e)!c"te), 0're ':er(ul 0')e0.

5. CONCLUSIONS

Re"l2T!0e 9!ne0"t!c '%!t!'n!n !% ec'0!n " 0"turetechn'l'& !n the %ur$e&!n "n) 0"!n !n)u%tr&. +"nu("cturer%"re '((er!n " $"r!et& '( %&%te0 %'lut!'n%. But the 0"'r !%%ue !n 'ur c'untr& re0"!n% th"t the 0'!le )"t" c'$er"e /GPRS 'r 3G !%%u((er!n (r'0 the l"c4 '( !ntere%t (r'0 the eh"l( '( the r'$!)er%,

:h' "re 0"!nl& !ntere%te) !n $'!ce %!n"l c'$er"e.Pr'$!)!n )!((erent!"l c'rrect!'n% ('r RT9 '%!t!'n!n $!"

the Internet h"% 0"n& ")$"nt"e% '$er c'n$ent!'n"l c'rrect!'ntr"n%0!%%!'n %er$!ce%. Sure, :e c"n u%e " retr"n%0!%%!'n 0eth')Su", 767J, ut :hen u%!n 'nl& "n etern"l 0')e0, the ene(!t%'( " l': c'%t "n) e"%!er t' u%e !n(r"%tructure "re '$!'u%.

Th!% "er tr!e% t' r'$!)e "n !neen%!$e "n) e((ect!$e%'lut!'n ('r 't"!n!n )!((erent!"l c'rrect!'n% e$en !n th'%e "re"%:here :e )'nt h"$e GS+ %!n"l c'$er"e u%!n c'n$ent!'n"l

e8u!0ent. Surel&, n'2'ne c"n u"r"ntee th"t the %'lut!'n :'r4%e$er&:here, ut %e$er"l 'ther te%t% re$e"le) th"t !t !% %t!ll " ':er(ul"n) rel!"le t''l, "n) eten)% the u%"le "re" '( " %!nle RT9 r'$er /:hen n' "%e rece!$er 'r retr"n%0!%%!'n %&%te0 !% %et u.

Further0're, the u%e th!% 0')e0 :!ll %t"!l!-e the )"t"(l':, "ll':!n u% t' 't"!n !n!t!"l!-"t!'n /(!e) %'lut!'n !n " %h'rter er!') '( t!0e, "n) "l%' re)uce% the 'ccurrence '( the ;Ece%%!$e0'$e0ent; err'r, :h!ch "e"r% :hen the %!n"l /"n) )"t" (l': !%n't c'n%t"nt. Th!% 0're %t"le c'nnect!'n :!ll "l%' 0e"n th"t :e :!ll

h"$e le%%er tr"n%!t!'n% (r'0 3G /'r 3,5G %!n"l% t' G /GPRS%!n"l% !n /0"!nl& ur"n "re"%, thu% re)uc!n the )"t" l'%% th"t c"n'ccur "l'n :!th th!% tr"n%!t!'n.

An'ther n't"le "%ect !% th"t the RO+POS S&%te0 !%tr"n%0!tt!n )!((erent!"l c'rrect!'n )"t" '$er the Internet !n the RTC+/R")!' Techn!c"l C'00!%%!'n ('r +"r!t!0e Ser$!ce% ('r0"t, "n) !t%%tructure !% 0're ;l''%e< c'0"re) t' the 0uch 0're c'0"ct CR+('r0"t. >"$!n th!% !n 0!n), !t !% '$!'u% th"t " h!her "n):!)thc'nnect!'n :!ll "%%ure " 0're %t"le :'r4 r'ce%% /!n ter0% '(


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%ee) "n) l'%t )"t" "c4et% h"n)l!n, "n) thu%, !t !% )e%!re) t'0"!nt"!n " 3G /3,5G )"t" c'nnect!'n "% l'n "% '%%!le.

L"%tl&, " %t"le 3,5G c'nnect!'n c"n h"$e %e$er"l 'ther ene(!t% "% :ell. It r'$!)e% u% :!th " ("%ter "cce%% (r'0 the (!el) t'Internet2"%e) )"t""%e% /c'nt"!n!n 0"% 'r 'ther !n('r0"t!'n.

Al%', u%!n ")$"nce) c'ntr'ller% /l!4e the Tr!0le TSC3, :e c"nc"ture !0"e% "n) e'2t" the0, %' ,"l'n :!th the 0e"%ure0ent%"n)='r 0"% cre"te) 'n the (!el), the%e !cture% c"n "l%' e %ent $!"e20"!l /u%!n the Internet c'nnect!'n "c4 t' the '((!ce 'r "n&:hereel%e ('r ne"r re"l2t!0e $!e:!n, r'ce%%!n 'r )ec!%!'n 0"4!n.N"tur"ll&, h"$!n !n 0!n) the re"ter %!-e '( the !cture% %"$e), !t !%""!n )e%!r"le t' h"$e " l"rer "n):!)th c'nnect!'n. All '( the%e

'%%!!l!t!e% c"n (urther enh"nce the r')uct!$!t& 'th 'n "n) '(( the(!el).

STABILITATEA FLUMULUI DE DATE PRIN INTERNET 23,5G CU APLICAII GPS

Abstract: ucrarea de fa45 6ncearc5 s5e&iden4ie7e posibilitatea !5ririi ratei de transfer adatelor necesare 6n aplica4iile GPS RTK 8i GPSVRS, prin utili7area tehnologiei 3,G" 2re la ba75faptul cunoscut c5 trans!isia de date ocup5 unloc secundar 6n priorit54ile operatorilor de telefonie!obil5" -eoca!dat5 nu!5rul utili7atorilor tehnologiei GPS nu pre7int5 un interes !a'or

pentru respecti&ele co!panii, astfel 6nc9t recep4ionarea se!nalelor de date 6n 7onele

i7olate este deficitar5" Prin utili7area unor co!penente de ulti!5 genera4ie, prin pre7entalucrare 6ncerc5! s5 de!onstr5! faptul c5 pute!a&ea o stabilitate a fluului de date, precu! 8i

posibilitatea de a pri!i aceste date 6n 7one 6ncare p9n5 6n acest !o!ent acest lucru a fost i!posibil"

Cuvinte cheie: senzori, GPS, corec ii diferen ialeț ț


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REFERENCES

1. ETS 300 384 – rad! "r!ad#a$%&' $($%)*$+ ,)r( -'Fr)/)( ,-F r)/)( *!da%)d $!&d "r!ad#a$%&'%ra&$*%)r$ # Eur'e"n Telec'00un!c"t!'n St"n)"r), *"nu"r&6??5

2. Ga! Y., L . /776 2 D!((erent!"l GPS P'%!t!'n!n '$er Internet,*'urn"l '( Ge'%"t!"l En!neer!n, 1'l. 3, Nr. 6, 62, 776

. G)"ard >., 6)")r G. /775 2 U%!n the Internet ('r %tre"0!n)!((erent!"l GNSS )"t" t' 0'!le )e$!ce% # Pr'cee)!n% '( the n)

W'r4%h' 'n P'%!t!'n!n, N"$!"t!'n "n) C'00un!c"t!'n/WPNC75 6%t Ultr"2W!)e"n) eert t"l4 /UETQ75

!. G!d$*% A. /77H # W!rele%% c'00un!c"t!'n, St"n('r)Un!$er%!t&, 77H

". -!*a&&76))&! B., L)'a% 9., 6)$)r +., L#%)&)'')r >./773 2 N"$!"t!'n, Pr!nc!le% '( P'%!t!'n!n "n) Gu!)"nce,Sr!nerW!enNe:Y'r4, 773

#. L)& E. /77H # Net:'r4e) Tr"n%'rt '( RTC+ $!" InternetPr't'c'l /NTRIP # Al!c"t!'n "n) Bene(!t !n +')ern Sur$e&!nS&%te0%, FIG W'r4!n Wee4 77H, Athen%, Greece, +"& 2,77H

$. N)a#9 +. # Rece!$!n D!((erent!"l "n) RT9 C'rrect!'n% '$er Internet, :::.h&"c4.c'0

%. N)&)r *. /777 2 S!%te0ul )e P'-!!'n"re Gl'"l 2 GPS,E)!tur" +"tr!, Bucuret!, 777

&. t.Ș S"a S. N$%!r A. :!#)a /767 2 The "n"l&-e '( thetr"n%0!%%!'n '%%!!l!t!e% '( )!((erent!"l )"t" c'rrect!'n% !n the!$en r")!' !n(r"%tructure c'ntet # GISOPEN 767C'n(erence, S-4e%(ehr$r, >un"r&, +"rch 6@26

1'.N.C. Ta"!% /6??@ 2 C'0"ct D"t" Tr"n%0!%%!'n St"n)"r) ('r

>!h2Prec!%!'n GPS 2 Pr'cee)!n% '( the ?th

Intern"t!'n"lTechn!c"l +eet!n '( the S"tell!te D!$!%!'n '( The In%t!tute '( N"$!"t!'n /ION GPS 6??@

11. Ga! Y., L . 2 Re%e"rch T':"r) W!rele%% Internet2B"%e)DGPS 2 Pr'cee)!n% '( 9IS 776, B"n((, C"n")", *une 52

VVV:::.gnss$internet$radio"software"infor!er"co!:::www"e$portal"ro::: :::.!%.4.un).)e


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VVV :::."c!(!ccre%t.c'0 2 P'%!t!'n!n )"t" l!n4% ('r Sur$e&!n"n) +"ch!ne C'ntr'lVVV :::.r)%.'r.u4 2 RDS F'ru0 # the "%%'c!"t!'n '( RDS u%er%

# UECP, RDS Un!$er%"l Enc')er C'00un!c"t!'n Pr't'c'l, SPBH?7, F!n"l $er%!'n @.7.VVV :::.r'0'%.r'VVV :::.tr!0le.c'0

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Stability of Data Flow Using 3,5g Internet for Gps Applications