barryhuang621 發表於 2014年2月24日 12:56 AM
K大:
所以理論上是不要有同時兩個power 的輸入對吧?
想確定一下我的理解是對的,電源的輸入有幾種可能
UBEC接再input端然後JP導通(沒有3DR power module)
UBEC接在input就不必JP1了,因為output只接電變,沒必要供5V的電給電變.
UBEC接再output端然後JP導通(沒有3DR power module)
正確
UBEC接再output端然後JP不導通,並且接上3DR power module (帶BEC版本)
正確
應該不能用UBEC接再input端然後也接上3DR power module因為兩者都會對APM的input端供電
正確
DL datasheet來看,看來是要在SBAS信號下才能有高精度,台灣是沒有SBAS衛星訊號
不過又看了一段說明
For world-wide application, the NEO-7P supports Differential
GPS (DGPS) operation as an alternative to SBAS and PPP, usingRTCM correction messages from a local reference station or aidingnetwork. Ionospheric corrections received from regional SBASsatellites (WAAS, EGNOS, MSAS) enable the highest stand-alonepositioning accuracy from the PPP algorithm. u-blox’ PPP also pro-vides useful improvements in stand-alone precision even withoutSBAS. PPP delivers its full benefits after the first few minutes ofoperation with an unobstructed sky view.