• Cehui8.com ϢרҵŻ
  • ҳ >  > GPS/

    ֳGPSϵͳתⷽ

    2013-07-07 11:11:23Դ: ̳ߣ

      ժҪGPSWGS-84ϵΪݶģֳGPSʹõϵͳWGS-84ϵͳҹĿǰʹõ1954걱ϵ1980Ҵϵ˱WGS-84ת54ϵ80ϵIJĽܵľʵʹòķ

    ؼʡֳGPSϵͳת



    Ŀǰϳ۵ֳGPSʹõϵͳWGS-84ϵͳʹõĵͼϴ󲿷ֶ1954걱ϵ1980ҴϵͬϵͳǵʹôѣǾͳΰWGS-84ת1954ϵ1980Ҵϵ⡣֪ͬϵ֮ƽƺתĹϵҪʹֳGPSתΪԼҪ꣬ϵWGS-84ͱ54ϵ80ϵ֮תϵ֮ת߲߲һתҪϸߵļ㣬ֳGPSջڲõֻҪûDXDYDZDADFʾ뼴Ͻת
    1954ϵΪֳGPSջתķ

    ̼ͼ


    һռߵȼƵ

    ӦֳGPSջ۲ҳϷֲȵĵȼ㣨ԽԽãGPS“B”㣬λΧ޵ŲţҰźǿųȡЩ54ϵĸ˹ƽֱ꣨xyؾγȣBL߳h ߳쳣ֵξWGS-84ϵĴؾγȣBLظH

    ֱֳGPSⶨ֪BLHֵ

    ͬʱռϵxyBLhξֵWGS-84ϵBLHֵ˲衣
    ûռֻ54꣬д˲WGS-84ϵҹϵ֮ƽϴҪӦռĿƵתļ㣬ʱӦռĸߵȼƵϷֱBLHֵWGS-84꣩תʱʹá

    άֱXYZ

    ϵռֱϵ֮Ĺϵͼͬһռ㣬ϵռֱϵתϵʽ

     3-1 

    УN=A/1-E2sin2B1/21954ϵĴظH=h+ξXYZΪϵеάֱ꣬AΪϵӦ֮ᣬEΪϵӦһƫʣFΪϵӦ֮ʣNΪõîȦʰ뾶

    ݲĴֵBWGS84L WGS84H WGS84ռBBJ54LBJ54HBJ54ֱ빫ʽ3-1άֱX1Y1Z1X2Y2Z2

    ռֻǸ˹ƽֱ꣨x,yӦƽֱ꣨x,y˹ͶӰ㹫ʽ3-2ֵBLٴʽ3-1X2Y2Z2ʱ

    3-2

    ʽ


    ͬϵӦ±

    Ŀ

    WGS-84

    54

    80

    A

    6378137 M

    6378245 M

    6378140 M

    һƫƽE2

    0.00669437999013

    0.006693427

    0.006694385

    F

    1/298.257223563

    1/298.3

    1/298.257


    ģתDXDYDZDADF

    4-1


    ģǰWGS-84ϵĿռֱԭƽƵ1954ϵԭ㣬1954ϵԴﵽϵתķ(עֳGPS洢WGS-84꣬תûϵʾǾתֵ)
    ѵõάֱֱֵ루4-1ʽDXDYDZDADFֵ

    һתϵͳȷԺDADFdzֵDXDYDZڲͬвֵͬ

    壮顡

         DXDYDZDADFת󣬱밴ʾֱֳGPSͬʱ߾ȡEͶӰΪ1.00000ƫΪ500000mϱƫΪ0赥λΪסЩӦõʵؼ⣬ǷȷǣҰѡҰGPSźǿ㣨״サ㡢ȣʯƵвȻҳЩ֮ȽϡȽϽƾȣӦ²ת

    ںӳйо“DOMI˺ViʺĿо”ĿУGISͼʱֳGPSת󣬽ʵؼĽ 

    Ƚϱ

    ʵY

    ʵX

    ֪Y

    ֪X

    Y

    X

    1

    3051

    1948

    3052

    1946

    1.0

    -2.0

    2.2

    2

    3044

    1956

    3044

    1954

    0.0

    -2.0

    2.0

    3

    3039

    1952

    3038

    1949

    -1.0

    -3.0

    3.2

    4

    3045

    1942

    3047

    1942

    2.0

    0.0

    2.0

    5

    3196

    2058

    3200

    2053

    4.0

    -5.0

    6.4

    6

    3001

    2232

    3103

    2229

    2.0

    -3.0

    3.6

    7

    3139

    2196

    3142

    2193

    3.0

    -3.0

    4.2


    ϱԿλ6.4mСλ2.0mλĿǰϳ۵ֳGPSƵĵλһΪ10-15ף˵ûнвֵ£ﵽ־ȣӦ˵DZȽϸߵġתͼϽУGPS BϽ⣬žȻߡ

    Ҫο
    [1] GARMIN.eTrex Venture owner’s manual and reference guide.
    [2] ,Ż,־ǿ,.GPSԭӦá.人Ƽѧ.
    [3] Ԫ÷.Ʋѧ. 人Ƽѧ

       вشijڴݸϢ֮Ŀģζͬ۵֤ʵݽο
       Ȩ : վԴ磨Ͷ壩Ȩϵɾ

    ض