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)
Muïc Luïc
CHÖÔNG 1 ÑÒNH VÒ KHOÂNG GIAN ................................................................ 4
1.1 giôùi thieäu ............................................................................................. 4
1.2 HEÄ THOÁNG ÑÒNH VÒ voâ tuyeán .......................................................... 4
1.2.1 Caùc heä thoáng ñònh vò treân maët ñaát ............................................................... 4
1.2.2 Caùc heä thoáng ñònh vò veä tinh ........................................................................ 6
1.3 lòch söû hình thaønh vaø phaùt trieån caùc heä thoáng ñònh vò veä tinh .............. 8
CHÖÔNG 2 HEÄ THOÁNG ÑÒNH VÒ TOAØN CAÀU ............................................... 14
2.1 Giôùi thieäU.......................................................................................... 14
2.2 CÔ SÔÛ ñònh vò trong heä thoáng GPS ................................................... 14
2.2.1 Cô sôû veà maët hình hoïc ............................................................................... 14
2.2.2 Cô sôû veà maët ñaïi soá .................................................................................. 17
2.3 Caáu truùc heä thoáng ñònh vò toaøn caàu GPS ............................................ 18
2.3.1 Maûng heä thoáng caùc veä tinh GPS trong khoâng gian ..................................... 18
2.3.2 Maûng caùc traïm ñieàu khieån heä thoáng GPS .................................................. 20
2.3.3 Maûng söû duïng heä thoáng GPS ..................................................................... 21
2.4 CAÁU TRUÙC TÍN HIEÄU VEÄ TINH ..................................................... 21
2.4.1 Ñaëc ñieåm tín hieäu GPS .............................................................................. 21
2.4.2 Caáu truùc tín hieäu veä tinh ........................................................................... 22
2.4.3 Thoâng ñieäp phaùt tín haøng haûi (baûn lòch veä tinh) ......................................... 24
2.4.4 Caùc trò ño pha vaø maõ ................................................................................ 25
2.5 Maùy thu GPS ..................................................................................... 30
2.5.1 Sô ñoà nguyeân lyù ........................................................................................ 30
2.5.2 Caáu truùc maùy thu ...................................................................................... 31
2.5.3 Phaân loaïi maùy thu ..................................................................................... 32
2.6 HEÄ TOAÏ ÑOÄ, THAM CHIEÁU THÔØI GIAN GPS ............................... 35
2.6.1 Giôùi thieäu heä toaï ñoä .................................................................................. 35
2.6.2 Heä toaï ñoä gaén vaøo traùi ñaát ........................................................................ 38
2.6.3 Heä toaï ñoä quoác teá WGS 84 ........................................................................ 40
2.7 caùc tham chieáu thôøi gian vaø thôøi gian GPS ........................................ 42
2.7.1 Caùc heä chia thôøi gian ................................................................................ 43
2.7.2 Giôø GPS ................................................................................................... 44
2.8 Quyõ ñaïo veä tinh GPS ......................................................................... 45
2.8.1 Caùc ñònh luaät Kepler ................................................................................. 45
2.8.2 Caùc quyõ ñaïo elip lyù töôûng ......................................................................... 45
2.8.3 Ñònh vò vaø quan traéc veä tinh ...................................................................... 47
2.8.4 Caùc thoâng soá treân quyõ ñaïo GPS ................................................................ 48
CHÖÔNG 3 SAI SOÁ ÑO GPS................................................................................. 51
3.1 Giôùi thieäu chung ................................................................................ 51
3.2 Caùc sai soá töø maûng ñieàu khieån .......................................................... 54
3.2.1 Sai soá quyõ ñaïo veä tinh ............................................................................... 54
3.2.2 Sai soá töø ñoàng hoà veä tinh ........................................................................... 55
3.2.3 Chính saùch S/A(Selective Availibility) vaø A/S (Anti-Spoofing) .................... 56
3.3 Caùc sai soá phaùt sinh töø moâi tröôøng lan truyeàn tín hieäu voâ tuyeán ........ 56
3.3.1 Treã taàng ñieän ly ........................................................................................ 56
3.3.2 Treã treân taàng ñoái löu ................................................................................. 61
3.3.3 Ña ñöôøng truyeàn ....................................................................................... 65
3.4 Sai soá treân maûng maùy thu .................................................................. 69
3.4.1 Sai soá treân trò ño treân ñoàng hoà vaø nhieãu töø maùy thu ................................... 69
3.4.2 Sai soá do söï dòch chuyeån taâm pha anten..................................................... 69
3.5 AÛnh höôûng cuûa caáu hình veä tinh ....................................................... 71
3.5.1 Khaùi quaùt .................................................................................................. 71
3.5.2 Xaùc ñònh giaù trò GDOP ............................................................................. 74
3.5.3 Giaûi phaùp khaéc phuïc ................................................................................. 74
3.6 TRÒ NHAÄP NHAÈNG CUÛA PHA SOÙNG MANG ................................ 75
3.6.1 Pheùp loaïi tröø trò nhaäp nhaèng chu kyø .......................................................... 75