臺灣博碩士論文加值系統

本文係研究在即時 DGPS 系統下， 自撰程式，以載波相位改進單點即時
定位精度，進而採用動態測量 Kinematic Survey ）之技巧，先結合相位
和電碼， 解得瞬時的精確定位，再運用「未定函數法（ Ambiguity
Function Method ）」搜尋未定整數值， 最後以載波方式定位。 另
輔以衛星訊號之都卜勒頻移（ Doppler Shift ）的累積變化來偵測週波
脫落（ Cycle Slip ）。靜態相位平滑後之 DGPS 定位（簡稱
SDGPS ）依實驗之結果的標準差 0.8402、變異數 0.7059， 比單純之
DGPS 定位（標準差 數 0.7212 ）略有改進，但在動態測試下， DGPS
與 SDGPS 之差異不大。 另外，單機未定函數法，並未如預期的精確，其
定位誤差型態與 C/A code 單機定位相似。

We edited programs to improve single position accuracy
with carrier phase under DGPS. We use the skills of the
kinematic survay to combined carrier phase and code to get a
instantly accuracy position. Then use the 「 ambiguity
function method 」 to find the cycle ambiguity. Afterward, we
can use carrier phase to position and survey the cycle slip by
accumulating the Doppler shift of the satellite signal. The
result of static position test after phase smooth under SDGPS (
STDE: 0.8402, VAR: 0.7059 ) better than DGPS ( STDE: 0.8492,
VAR: 0.7212 ), and little difference betwen DGPSand SDGPS in
kinematic test. Beside, the single ambiguity function method
,which the style of error is same with C/A code position and
which has not good accuracy.