Status on Kunming station Longfei Hao 2018.3.19 Shanghai Outline - - PowerPoint PPT Presentation

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Status on Kunming station Longfei Hao 2018.3.19 Shanghai Outline - - PowerPoint PPT Presentation

Dec 03, 2022 9 likes •199 views

Status on Kunming station Longfei Hao 2018.3.19 Shanghai Outline Background EVN Observations Outlook Construction: Basement construction and antenna mounting (Aug. 2005May 2006) designed by CETC Institute No. 39 Location:

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SLIDE 1

Status on Kunming station

Longfei Hao 2018.3.19 Shanghai

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SLIDE 2

Outline

 Background  EVN Observations  Outlook

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SLIDE 3

Construction: Basement construction and antenna mounting (Aug. 2005—May 2006) designed by CETC Institute No. 39

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SLIDE 4

Location: Kunming station in Google

10km 16km

Longitude:102°47'42" latitude:25°01'33"

Altitude : ~1950m

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SLIDE 5

KUNMING BEIJING

Data down-linking with Miyun 50m

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SLIDE 6

Purpose ： CVN for Lunar Project

1993 1987 2006 2006 2006

25m 25m\65m 50m 40m

VLBI center

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SLIDE 7
  • 2. Antenna performance

key specifications

Prime dish Diameter 40m Mounting Azimuth-Zenith Surface(<26m) Solid aluminum panel Surface(26-40m) Stainless steel mesh Shape accuracy(<26m) ~0.5 mm (rms) Shape accuracy (26-40m) ~2.5 mm(rms) Pointing accuracy ~28’’ Optics Cassegrain; f/D=0.35

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SLIDE 8

working bands

S X C(new) Frequency range 2150~2450M Hz 8200~9000M Hz 4000~8000M Hz Polarization L&R L&R L&R LO 2000MHz 8100MHz

  • ptional

Tsys 50K(Room TEMP.) 50K(Cooled) 35K Efficiency ~60% ~45% ~50%

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SLIDE 9

Radio Environment

Good ！

(4040—7500 MHz) (7500—9100 MHz)

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SLIDE 10

 C

h i n e s e D a t a A c q u i s i t i

  • n

S y s t e m ( C D A S , S H A O )

I n p u t f r e q u e n c y r a n g e :

  • 5

1 2 M H z

3 2 C h a n n e l s ( i n c l u d i n g U S B a n d L S B )

O u t p u t : . 1 2 5 , . 2 5 , . 5 , …, 3 2 M H z

 M

a r k 5 B + r e c

  • r

d e r

S u p p

  • r

t 2 G b p s

  • b

s e r v a t i

  • n

s

 T

i me a n d F r e q u e n c y S y s t e m

 1

p p s c

  • u

n t e r

w e a t h e r i n s t r u me n t

G P S

5 M H z & 1 p p s ( H

  • ma

s e r )

VLBI terminal

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SLIDE 11

 H

  • Ma

s e r

 F

r

  • m

U S A

 D

i s t r i b u t i

  • n

s y s t e m

 D

B B C 2 + Ma r k 6

New instruments

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EVN observation: First fringes to EVN(S/X)

On 17 Jun 2009, the Kunming telescope participated in the EVN network monitoring experiment N09SX1 for the first time. We successfully detected fringes to the other EVN telescopes. The image shows the fringe on the baseline Kunming -- Effelsberg (7728 km).

New 7 baselines were established, there are 5 baselines are over 7000km!

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SLIDE 13

Ongoing : C band fringe test with EVN(201 6)

 Oct 20~21 2016 N16M3&N16C3

5cm 6cm/1Gbps 6cm/2Gbps

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SLIDE 14

Ongoing : Sessions of EVN(2017)

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SLIDE 15

Ongoing : Sessions of EVN(2018)

 2018.2-2018.3

5cm 6cm/1Gbps 6cm/2Gbps

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SLIDE 16

Ongoing : Sessions of EVN

 2018.2-2018.3

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SLIDE 17

Ongoing : Become an associate member?

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SLIDE 18
  • utlook

 1.Thanks for the support from the foreign and Chinese VLBI colleagu es.  2.Kunming telescope has taken part in some VLBI observations with EVN ， CVN ， EAVN and IVS. We realize that the international VLBI cooperation is very important to promote our research and technique capabilities.

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SLIDE 19

谢 谢 ！

Thanks!

Any comments please contact: haolongfei@ynao.ac.cn