[填空题]
The Navstar Global Ppq7:vj;kd q ;yositioning Sys()ju,xa+dp 3gu4fi sk tem (GPS) utilizes a group of 24 satellites orbiting the Earth. Using “triangulation” and signals transmitted by these satellites, the position of a receiver on the Earth can be determined to within an accuracy ofksd3 ) +ag ifpu(ju4,x a few centimeters. The satellite orbits are distributed evenly around the Earth, with four satellites in each of six orbits, allowing continuous navigational “fixes.” The satellites orbit at an altitude of approximately 11,000 nautical miles [1 nautical ]. (a) Determine the speed of each satellite. $\times 10^3$
(b) Determine the period of each satellite. = hours
