time signal satellite service 中文意思是什麼
time signal satellite service
解釋
時間信號衛星業務-
Standard frequency and time signal - satellite service
衛星標準頻時信號業務 -
However, although gps can provide worldwide real - time positioning service, the fatal shortcoming is that the positioning precision can be reduced sharply owing to the weak satellite signal which is blocked by buildings and trees etc. fortunately, gsm / gprs network can work and provide positioning service can transmit the position messages to remote users or servers
然而, gps定位雖然能實現全球范圍內的實時定位,但是對于gps來說,其很大的一個缺點是跟蹤衛星的信號常常由於建築物及樹木等的遮擋而使gps的定位精度大大降低,甚至無法進行正常的導航和定位。而基於gsm / gprs網路的位置服務恰恰能彌補gps定位的這一缺點,並且gsm / gprs網路能將位置信息傳送到遠端。
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