RNAV | Satellites Flashcards
1
Q
The two bands up which satellites transmit are _HF, __ and __
A
UHF L1 L2
2
Q
L1 operates at ___ _Hz
A
1575 MHz
3
Q
L2 operates at ___ _Hz
A
1227 MHz
4
Q
Outline the purpose of the L5 frequency
A
To allow civil users to perform automatic corrections fro time delays caused by ionospheric effects on the signals.
5
Q
The L1 signal provides a ___
A
SPS, Standard Positioning Service
6
Q
The L2 signal provides a ___
A
PPS, Precise Positioning Service
7
Q
Authorised users will use ___ and ___ to achieve PPS accuracy
A
L1 L2
8
Q
L1 waves carry __ and __
A
C/A P
9
Q
L2 carries _
A
P
10
Q
The nav data transmitted by the satellite includes ___
A
- Almanac Data
- Ephemeris Data
- Clock correction params
- Ionospheric model
- Satellite health and status data
11
Q
The global average accuracy for 95% of the time is, horizontally ___, and vertically ___
A
- 9m
- 15m
