EUREF Vienna 2005

Antenna Tests at BEV Vienna 2002-2005G. Stangl, H. Titz

EUREF Vienna 2005

Purpose

• Equipment test (ca. 50 combinations receivers+antennas+radomes)

• Stability of coordinates• Stability of environment (City, transmitters)

EUREF Vienna 2005

Test Network

WIEBWIEN

PENC

MOPI

JOZETUBO

MTBGGRAZ

TRFB

STPO

GOPE

Star network

WIEB-WIEN 6 m

Others 20-500 km

EUREF Vienna 2005

Equipment Types

• Ashtech• Geotracer• JPS• Leica• Topcon• Trimble

EUREF Vienna 2005

Time Series

• 2002 • DOY 219-226, 240-247, 271-285, 293-300, 320-327• 2003• DOY 063-078, 165-219, 237-241, 244-364• 2004• DOY 001-085, 117-131, 201-240• Since 2005 WIEB in APOS network

EUREF Vienna 2005

Site WIEB with BEVA Radom (most used)

EUREF Vienna 2005

LEIAT504 Radom Tests (U)Up

-20

-15

-10

-5

0

5

10

15

1 7

13

19

25

31

37

43

49

55

61

67

73

79

85

91

97 Up

NONE GRAZ BEVA

EUREF Vienna 2005

ASH701045C_M BEVA – LEIAT504 NONE

Up

-15

-10

-5

0

5

10

1 3 5 7 9

11 13 15 17 19 21 23 25 27 29 Up

LEIAT504 NONE

EUREF Vienna 2005

TRM29659.00 – LEIAT504 NONE

Up

-15

-10

-5

0

5

10

1 7

13 19 25 31 37 43 49 55 61 67 73 79 85 91MM Up

NONE

LEIAT504 NONE

BEVA BEVA

GRAZ

EUREF Vienna 2005

TRM41249.00 NGS Corrections – LEIAT504 NONECorrect and Fake Antenna Heights

Up

-40

-30

-20

-10

0

10

20

30

401 4 7

10

13

16

19

22

25

28

31

34

37M

M Up

NONELEIAT504

NONE NONE

+0.038 +0.025 +0.020

+0.015

BEVA

PENC

2002

2003

EUREF Vienna 2005

TRM41249.00 Different Corrections

Up

-25

-20

-15

-10

-5

0

5

10

15

20

251 3 5 7 9

11

13

15

17

MM Up

LEIAT504 NONE

NGS

LPT

Antenna

fake +0.020

EUREF Vienna 2005

LEIAT502 – LEIAT504 NONEUp

-80

-60

-40

-20

0

20

40

60

80

100

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

MM Up

LEIAT504 NONE

LEIAT502

EUREF Vienna 2005

LEIAT502 Correction Sets Elevation cut-off 5/10/15/20 degrees

Up

-150

-100

-50

0

50

100

150

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

MM Up

NGS Leica

Geo++

LEIAT504 GRAZ

EUREF Vienna 2005

Conclusions/Recommendations• LEIAT502: not usable for precise permanent stations –

appropriate correction for Bernese Software still missing, large elevation dependency probably caused by antenna design

• Trimble Zephyr: Replace NGS corrections by LPT corrections by international convention, until then a faked antenna height would be best to avoid height jumps in the time series

• PENC: Not usable anymore for Austrian EUREF representation (distortion by height jump after antenna exchange)

EUREF Vienna 2005

Thank you for attention! Thank you for attention!