35
If\byou\bare\bus\fng\bthe\bsy\astem\bfor\bthe\bf\frst\bt\f\ame,\bor\b\ff\byou\bhave\bnot\b\aused\b\ft\bfor\bsome\bt\fme\a,\b\ft
takes\babout\b5\bm\fnutes\b(or\a\babout\b2\bm\fnutes\b\fn\bopen\a\bareas)\bto\bcalculate\byou\ar\bveh\fcle's
pos\ft\fon.
The\bGPS\bsatell\ftes\bare\bc\aontrolled\bby\bthe\bU.S.\b\aDefense\bDepartment,\a\bwh\fch\bmay\b\fntent\fonall\ay lower\bpos\ft\fon\fng\baccu\aracy.\bIn\bsuch\bcases,\bthe\are\bmay\bbe\bveh\fcle\bpos\ft\f\aon\bdev\fat\fons.
There\bmay\bbe\bveh\fcle\bpos\a\ft\fon\bdev\fat\fons\bfor\bso\ame\bt\fme\bunt\fl\bGPS\bs\fgnal\as\bare\brece\fved\bafter turn\fng\bon\bthe\b\fgn\ft\fo\an.
GPS \bignal reception i\b poor \Oin the following place\b
In\btunnelsAmong\bh\fgh-r\fse\bbu\fld\fn\agsUnder\belevated\broads In\bwooded\bareas
GPS
Map Matching
Thi\b function compare\b your ve\Ohicle'\b tracking data with the road \Odata on the map
di\bc, applie\b dead reckoning to de\Otermine the road you are dr\Oiving on,
and di\bplay\b your vehicle on that r\Ooad on the map.
Intell\fgent\bmap\bmatch\fn\ag\baddresses\bthe\bfoll\aow\fng\bproblems\bto\bach\fe\ave\bh\fgh\baccuracy
\fn\bveh\fcle\bpos\ft\fon\fng.\a
Po\bition Correction for E\Olevated Road\bPos\ft\fon\baccuracy\b\fs\b\fmp\aroved\bby\bdetect\fng\b\ff
the\bveh\fcle\b\fs\brunn\fng\b\aon\bor\bunder\ban\belevate\ad\broad.
Us\fng\ba\bspare\bt\fre\b\fn\bpl\aace\bof\bthe\bregular\bone\a\bmay\bcause\bveh\fcle\bpos\ft\a\fon\bdev\fat\fons.
Any\bd\ffference\bbetween\a\bthe\bd\frect\fon\bwh\fch\byo\aur\bveh\fcle\bactually\btrav\aels\band\bthat\bshown on\bthe\bmap\b\fs\bautomat\fc\aally\bel\fm\fnated\bby\baz\fmu\ath\bcorrect\fon.
GPS i\b a po\bition detecting \by\bt\Oem utilizing the \bignal\b from
GPS \batellite\b deployed by the \OU.S. Department of Def\Oen\be.
The Mobile Navigation Sy\btem u\O\be\b input from three or mo\Ore
\batellite\b and calculate\b the vehicle\O po\bition ba\bed on the
principle of triangulation.
The po\bitioning accuracy of the \O\by\btem corre\bpond\b to the
error di\bplay of the GPS \Owhich i\b from about 30 to 200 me\Oter\b.
Po\bition Correction for P\Oarking Garage\bPos\ft\fon\baccuracy\b\fs\b\fmp\aroved\bby\bdetect\fng\b\ff\bt\ahe\bveh\fcle
\fs\bdr\fv\fng\b\fn\ban\belevated\a\bor\bunderground\bpark\f\ang\bgarage.
High-preci\bion Gyro\ben\borA\bgyro\bdetects\bturns\b\aw\fth\ban\baccuracy\bof\b0.05˚\bp\aer\bsecond.
Comb\fned\bw\fth\ba\bspeed\bs\aensor,\b\ft\benables\bthe\b\asystem\bto\bd\fsplay
the\bcurrent\bveh\fcle\bpo\as\ft\fon\beven\bwhere\bGPS\bs\a\fgnals\bmay\bbe\b
blocked.
A\b nece\b\bary
ance
8t0kf
\boNtT5
ogether,may\bbe\blate.
\bd\frect\fon.
nd\b\ft\bcannot
uld\balways
able\bat
sc.\bYou hosp\ftal\bor
e\bclosed
e\bthe\bt\fme r\fv\fng.
e\band\bmay rk\fng\bbrake
e\b32.
the\bmap\bby t\fre
eh\fcle. t\fons.
