Physics & Astronomy
radio occultation
100%
acquisition
55%
receivers
51%
satellite navigation systems
30%
telemetry
11%
sea level
11%
signal detection
10%
ionospheres
9%
simulators
8%
performance
7%
atmospheres
6%
profiles
4%
temperature
2%
Engineering & Materials Science
Global positioning system
53%
Field programmable gate arrays (FPGA)
50%
Satellites
38%
Navigation
19%
Carrier concentration
17%
Sea level
16%
Ionosphere
16%
Signal systems
15%
Radio receivers
14%
Signal detection
13%
Telemetering
13%
Simulators
9%
Temperature
4%
Experiments
4%
Earth & Environmental Sciences
radio
54%
GPS
50%
GNSS
16%
code
12%
telemetry
8%
electron density
8%
vertical profile
7%
aid
7%
ionosphere
7%
simulator
7%
sea level
6%
atmosphere
4%
detection
4%
experiment
3%
temperature
2%
parameter
2%