"Mert máskülönben, hogy tudnák kinyerni a felvételeket és kiértékelni ?"
Hetek alatt :)
A 23 kamera meg nem a tájat fotózza, hanem navigációs kamerák, mikroszkópok, egyéb elemző kütyük.
Majd a helikopátor kamerája csinál nekünk szép képeket :) Egyébként 10-13 perc amíg elér hozzánk bármilyen adat.
A helyi kommunikáció meg így történik:
"The quality of the telecommunication link between the rover and the lander is the best measure of how effective the link is. Of course the link quality is sensitive to modem temperature, BER, data volume and rover location. The Rover link quality is a measure of how well it is getting acknowledgment of good frames by the lander (LMRE) side of the link. Rover link quality is the ratio of the change in the number of the RX frame counts to the change in the number of the TX frame counts from one measurement to the next. Mathematically Rover link quality= 100*(delta RX / delta TX). If the link is degraded, the rover will get a number of NAK's (No Acknowledges) or other comm errors from the lander and the TX count will increase. Also, if the LMRE radio was off or not responding, the rover would increase the TX frame counter because it would be constantly receiving timeout errors. When a data frame does get ACK'ed (Acknowledged) by the lander as being received, the RX frame count will increase by 2.
LMRE link quality is a measure of how well the lander is receiving data from the Rover. A frame with garbled data, like a bad CRC count, will be recorded by the lander. Also, a good (or complete) frame that was received by the lander will also be recorded. The LMRE link performance is a slightly better estimate of the overall UHF link quality than the Rover link quality performance because, in theory, it keeps a better count of good versus bad data frames (it doesn't count the 6 Byte ACK frames). The way the rover-lander protocols work (see Rover Telecom FAQ#5) the RX frame counter gets incremented when a 6 byte ACK frame and 256 Byte (or less) data frame get sent, while the TX frame count gets incremented whenever the Rover sends any type of frame to the Lander *AND* if any comm errors occur. The RX frame counter can never increase at a rate higher than the TX frame counter, so a 100% Rover link performance is achieved if the TX and RX frame counters increase at the same rate. One thing is certain however, when the link is degraded for any reason both the Rover and Lander link quality numbers do show it."