To all beloved persons. Hello Every One, I am sharing here Global Navigation Satellite System Notes (GNSS) Notes. The topic will redirect to different links. Kindly look into it.
MID 1 GNSS PAPER: 👉👉 CLICK HERE
GR20 GNSS Notes
Syllabus
The syllabus for the Global Navigation Satellite System :
UNIT-I
GPS fundamentals
GPS System Segments:
- space, control and user segments
- Principle of operation
- Current status of GPS satellite constellation
Orbital Mechanics:
- GPS ephemeris data
- algorithm for computation of satellite’s position from ephemeris data
Time References:
- solar and sidereal days
- UTC time
- GPS time.
UNIT-II
GPS signals
Legacy GPS signals:
- Signal structure, Operating frequencies
- C/A and P-Code
- Navigation message
Modernized GPS signals:
- list of signals and their significance.
Range measurements:
- code and carrier measurements
- User position estimation with PRN codes.
Coordinate systems:
- Earth Centered Earth Fixed (ECEF) coordinate system
- Earth Centered Inertial (ECI) coordinate system
- Geodetic coordinate system
- Ellipsoid and Geoid
- Regional and Global Datum
- World Geodetic System (WGS-84).
UNIT-III
GPS error sources
- Satellite clock error
- ephemeris error
- Receiver clock errors
- satellite and receiver instrumental bias
- Multipath error
- receiver measurement noise
- ionospheric error
- tropospheric error
- Klobuchar model
- ionospheric delay estimation using dual frequency measurements and UERE
Dilution of
precision:
- HDOP
- VDOP
- TDOP
- PDOP
- GDOP.
UNIT-IV
Data formats:
- RINEX Observation and Navigation Data formats
GNSS:
- architecture
- operation and signals of other global satellite systems such as Galileo, Beidou, GLONASS and regional systems such as IRNSS, QZSS.
UNIT-V
Differential GPS (DGPS):
- Principle of DGPS,
Types of DGPS:
- Local Area DGPS (LADPS)
- Wide Area DGPS (WADGPS).
GPS Augmentation systems:
Principle of operation of Satellite Based Augmentation system (SBAS)
Ground Based Augmentation System (GBAS)
GNSS Applications:
- Surveying
- Mapping
- Marine
- air and land Navigation
- Military and Space Application.
I am sharing 3 text books here.
Unit Wise Topic Links
GPS System Segments 👉 {getButton} $text = {CLICK HERE}$icon={link}
Topic Wise Links
- Current status of GPS Satellite Constellation 👉 - {getButton} $text = {CLICK HERE}$icon={link}
- Satellite Clock Error 👉 {getButton} $text = {CLICK HERE}$icon={link}
In TB1, pg no 478. 👆👆
Unit Wise Topics
Unit 5
- GNSS Applications 👉 - {getButton} $text = {CLICK HERE}$icon={link}
Unit 3
- GNSS Errors 👉 - {getButton} $text = {CLICK HERE}$icon={link}
- Troposheric error, Receiver Noise, Multipath, Ionospheric 👉 {getButton} $text = {CLICK HERE}$icon={link}
- KLOBUCHAR MODEL - 👉 {getButton} $text = {CLICK HERE}$icon={link}
Unit 2
Unit 1
- Principle of Operations - TB1 PG No 10