gnss global cm level positioning · [email protected] geobusiness, london 21-may-2019. paste...

Marinestar GNSS Global cm level positioning1

GPS

Glonass

BeiDou

Galileo

[email protected]

[email protected]

Geobusiness, London 21-May-2019

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Marine Land

Asset

Integrity

Geobusiness 21-May-2019 Marinestar GNSS Global cm level Positioning2

Site

Characterization

Fugro focus

Go to insert header and footer under

11.000 Employees ~40 Vessels CPT Trucks Laboratories Jack-Up Platforms

400 R&D Scientists Drill Rigs Remote

Operating

Vehicles

Automatic

Unmanned

Vehicles

130 GNSS Reference Stations

Fugro people and equipment



4

GNSS Constellations

Geobusiness 21-May-2019 Marinestar GNSS Global cm level Positioning

System 2019 2020 Height Incl Orbit Repeat Signals

GPS IIa 1 0?

20.180 55 6 23h56m

-4 Min

L1-CA, L1 P, L2-P

GPS IIR 11 11-?

GPS IIR-M 7 7-? +L2C

GPS IIF 12 13-? +L5

GPS III 1 3 +L1C

Glonass-M 24 24

19.140 64 3

22h30m

+1 Sat-

Shift-

FDMA

L1-CA/P,L2-CA/P

Glonass-K 3 4? +CDMA

Galileo-1 24 26 23.222 55 3 14 days E1, E5a+b, E6

BeiDou-2 MEO 3 27 21.500 55 3 23h46m B1,B2,B3

BeiDou-3Op

L1Freq.BeiDou-2 GEO 7 5 36.000

36.000

0 - -

BeiDou-2 IGSO 4 6 0 2 ~24h


5

GNSS Signals


http://insidegnss-com/figure-2-tables-1-2-something-old-something-new/ (2013!)

Radio Amateurs

Digital TV

GPS L1

Jammer

Iridium

Globalstar

1.5

Ghz

5G

Japan

More Frequencies Help!

DME/TACAN?

http://insidegnss.com/figure-2-tables-1-2-something-old-something-new/


6

GPS : Average used Satellites


Average 9.5

Maximum 14

Minimum 5


7

GPS : Minimum available satellites


Elevation>8

Degrees


8

Glonass: minimum used Satellites in a day


Average 6.5

Maximum 9 used

Minimum 4


9

Galileo : Average Satellites used 15-29 April-2019


Average 6.5

Maximum 9 used

Minimum 4

BeiDou-2 ConstellationIGSO

MEO

GEO


11

Average BeiDou-2 Satellites used by G4 (April-2019)


C5 C2 C6 C1 C4 GEO

IGSO IGSO

MEO MEO MEO

Average

China CONUS 12

Middle East 6-7

Europe 3

America’s 1


12

Nr BeiDou Type Launch

1 2 IGSO 2019-May-17

2

3

4

5

6

3

B1C

IGSO-2 2019-July

M19,

M20

2019-Oct

M21,

M22

2020-Q1

GNSS Launch Schedule


System Type Launch Date

GPS 2 2019-July-25

3 L1C 2019-Oct

GLONASS M 2019

K CDMA 2020-Q1

K CDMA 2020-July

Galileo 2020

2020

2021

2021Partly based on Richard Langley https://www.gpsworld.com/wp-content/uploads/2019/05/Unknown.png

Xinhua:

China plans launch of 8 to 10 Beidou satellites in 2019

https://www.gpsworld.com/wp-content/uploads/2019/05/Unknown.png


13

How Marinestar PPP works


~60 GNSS Reference stations to calculate Orbit and Clock error

1. Get GNSS L1, L2, L5 Code and

Phase Measurements

2. Multiple Computer Centres

• Calculate Orbit Error

• Calculate Clock Error

1. Transmit data to NCC’s

2. Uplink to Geostationary Satellites

NCC

NCC


14

Broadcast over 8 Geostationary Satellites.


1. L-band is very Reliable

2. Uptime 99.9998%

3. Little Rain Fade

4. 1200 and 600 BPS

5. Global dual Coverage

6. Backup Uplinks


15

Fugro Marinestar GNSS Positioning Services


Service Since Accuracy Method System Frequency Technique Range

VBS 1996 Meter SitesGPS/

GlonassSingle Differential

1000 KM

2000 KM

HP 2000 Decimeter Sites GPS Dual Differential500 KM

1000 KM

G2 2009 Decimeter Orbit1 Clock1GPS

GLONASS

Dual PPP Global

XP22003

2014Decimeter Orbit2 Clock2 Dual PPP

Global

G4 2015 Decimeter Orbit2 Clock2 GPS

GLONASS

Galileo

BeiDou

Dual PPPGlobal

G4+ 2016/

2017

CentimeterOC2 & UPD GPS

UPD GLO Dual PPP-RTK Global


16

Fugro-Marinestar VBS and HP Network


17

VBS: L1 Code Snapsnot Yesterday


25 CM 25 CM

25 CM 25 CM

18

HP 19-May-2019 (Yesterday) Horizontal RMS


1-5 CM2-5 CM

9 CM at 2000 km

2-5 CM

2-3 CM

19

G4 19-May-2019 height standard deviation


3-4 CM2-4 CM

2-4 CM

2-5 CM

3-4 CM

3-5 CM

20

One year(Oct-2017 to 2018) G2+ 95% statistics


G2+ rms 95%

North 12 mm 21 mm

East 11 mm 20 mm

Height 33 mm 61 mm

3 Sites with RF

Interference

removed

21

Fugro PPP-G2+ Position Statistics 2018


North

12 mm

East

11 mm

RMS

Height

61 mm

East

20 mm

95%

Height

RMS 33 mm

RMS

99.99998%

East ~10 cm

North ~10 cm

Height ~20 cm

One Year Data

120 Global Reference Sites

GPS and Glonass

GPS Wavelengths fixed


22

Convergence time from 32 global Sites


East Component

GPS 31 min.

GPS and Glonass 23 min. 25%

GPS and Glonass and Galileo 13 min. 60%

Beidou-2 No improvement globally

23

Global Marinestar improvements over the years


0

2

4

6

8

10

12

14

16

2014 2015 2016 2016

G2 G4+

cen

tim

etre

Year

95% global accuracy improvement

Height

Horizontal

5 cm

2019

5 cm

6.1 cm8 cmHorizontal

24

Available Receivers


❑Marinestar 9205, 3610

❑ Trimble SPS series

❑ Trimble OEM BD9xx, BX9xx

❑ Applanix POSMV series

❑ Advanced Navigation Spatial Dual

❑ SBG Splitbox GNSS

❑ Kongsberg DPS 110/112

❑ Kongsberg Seapath 3xx

❑ Septentrio AsteRx-u-Fg

25

Marinestar Applications


Multibeam Height Measure Tide

Berthing of Ships Future Autonomous vehicles Buoy Monitoring: Waveheight

Wind farm PositioningDredging

26

Fugro Marinestar G4 Benefits for the User


• Improved multibeam images

• Saving time due to high availability

• No tide equipment needed saves cost and time

• Faster Berthing

• Extra safety

Together we create a safe and liveable world.

Thank You


27

1. Phase multipath near the antenna

2. Troposphere (Heavy Rain/High Humidity)

1. More Satellites reduces and averages the effect.

3. Radio Interference

1. More Satellites. (Adding Glonass, Galileo and BeiDou-2)

2. More Signal power (Galileo E1, E5, GPS L1C)

3. More Frequencies ( Add to L1, L2 , E5, B1)

4. Narrow Bandwidth Antenna filters

5. Wide Band Interference rejection

6. Electronic Notch Filters

4. Scintillations near the Poles and in Polar region.

1. More satellites help

Limitations of PPP


gnss global cm level positioning · [email protected] geobusiness, london 21-may-2019. paste...

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