abbr. Global Position System, 全球定位系统 abbr. [军] Gunner's Primary Sight, 炮长主瞄准镜
gps gps
[ noun ] a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver <noun.artifact>
The survey for the Association of the British Pharmaceutical Industry by Milpro, a division of MAI, also found that two thirds of GPS are opposed to the proposals.
Unfortunately GPS is not yet suited to landing an aircraft in the worst weather conditions, known to pilots as Category 3. And Category 3 is a familiar state to crews landing in Europe.
A GPS receiver incorporates a small computer that measures the reception of coordinated radio pulses beamed from several satellites.
The 3,675-pound Navstar GPS is an advanced version of seven earlier model Navstars currently in orbit.
With GPS there is a tremendous advantage to be gained,' says Ken Medlin, a Rockwell vice-president.