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Design and manufacture of GROUND receiving STATIONs For Geo-stationary GMS-5 / MT-SAT / fy-2 and NOAA series polar orbi PowerPoint Presentation
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Design and manufacture of GROUND receiving STATIONs For Geo-stationary GMS-5 / MT-SAT / fy-2 and NOAA series polar orbiting satellites Bui Doan Trong, Bui Trong Tuyen, Tran Minh Van, Tran Xuan Canh, Huynh Van Ngoc, Nguyen Van Hieu, Ngo Duy Tan. Space Technology Application Center

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slide1

Design and manufactureofGROUND receiving STATIONs

For

Geo-stationary GMS-5 / MT-SAT / fy-2

and

NOAA seriespolar orbiting

satellites

Bui Doan Trong, Bui Trong Tuyen, Tran Minh Van,

Tran Xuan Canh, Huynh Van Ngoc, Nguyen Van Hieu, Ngo Duy Tan.

Space Technology Application Center

- STAC -

slide2

introduction

  • Space Technology and its application including Satellite Remote Sensing have developed rapidly and reached great progresses.
  • Nowadays, the use of satellite data plays very important role in natural resources and environmental monitoring especially in natural disaster prediction and mitigation.
slide3

Natural disasters caused great losses:

For the last 2 decades of the 20th century:

  • 3 million people dead, 1 billion lives affected.
  • 400 billion USD of property loss.
slide4

In Vietnam:

  • 1954-1999: Vietnam suffered from appx. 200 typhoons.
  • Average of 250 people dead per year.
  • 1996, 1997 and 2000:

thousands people dead and missing,

billions of USD of property loss .

slide5

Objectives

The systems, HRS-200 & HRS-201, designed and manufactured by STAC meets the following requirements:

  • HRS-200: receive high resolution data from the GMS-5/FY-2/MT-SAT

geo satellites

  • HRS-201: receive high resolution data from the NOAA polar satellite series: NOAA 12, 14, 16, 17.
  • Technical and functional specifications satisfy users’ tasks and well adapt to Vietnam practical conditions.
  • Easy operation, utilization, testing and maintenance.
  • Flexible structure, compatible with common standards.
  • Users take controls over the application, develop and integrate other professional modules.
  • Lower cost compared to equivalent imported ones.
slide6

GROUND receiving STATION

For

Geo-stationary GMS-5 / mt-sat / fy-2 satellites

slide7

GMS-5 Satellite

  • Launched in the spring of 1995.
  • Became the operational Japanese geo-synchronous weather satellite in June 1995 and operated well so far.
  • Stationed at 140 deg. E longitude and 35.800 km elevation above the Equator.
slide8

GMS-5 Satellite (2)

  • The digital image data are broadcasted on hourly schedule.
  • The VISSR raw data carry four channels:

- VIS (0,55- 0,80 m): 1.25 km spatial resolution

- IR1 (10,3-11,3 m): 5 km spatial resolution

- IR2 (11,5-12,5 m): 5 km spatial resolution

- IR3 (6,5-7,0 m) Water Vapor: 5 km resolution

  • Downlink frequency: 1.687,1 MHz.
  • Bit rate: 660Kbps.
slide9

FY-2 Satellite

  • Launched in June 25th 2000.
  • Stationed at 105 deg. E longitude and

35.800 km elevation above the Equator.

slide10

FY-2 Satellite (2)

  • As the same as GMS-5 satellite, the digital image of FY-2B are broadcasted on hourly schedule.
  • FY-2’s VISSR raw data carries three channels:

- VIS (0,5-1,05 m) : 1,25 km spatial resolution.

- IR (10,5-12,5m): 5 km spatial resolution.

- Water Vapor (6,2-7,6m): 5 km resolution.

  • Downlink frequency: 1.687,5MHz.
  • Bit rate: 660Kbps.
slide11

HRS-200 hardware

The hardware consists of:

  • Antenna.
  • LNA (Low Noise Amplifier).
  • Receiver and Demodulator.
  • Bit /Frame Synchronizers and Decoders.
  • PC Ingestor.

LAN (Local Area Network) may be established to enhance the system’s performance (option).

antenna
Antenna
  • Type: parabolic & fixed.
  • Diameter: 3,2 meters.
  • Polarization: linearity.
  • Gain: 32,5 dB.
  • Impedance : 50 Ohm.
slide14

LNA (Low-Noise Amplifier)

  • Input frequency: 1.670 – 1.710 MHz.
  • Gain :  35 dB.
  • Input Noise : 0,7dB.
  • Output signal: 100V
  • Impedance: 50 Ohm.
slide16

Down-Converter I and IF Amplifier I

  • Input frequency : 1.687,1 MHz.
  • Bandwidth : 30 MHz.
  • Input level : 100 V.
  • Output level : 3,5 mV.
  • Output Frequency: 150,9 MHz
slide17

Down-Converter II and IF Amplifier II

  • Frequency : 150,9 MHz.
  • Input level : 3,5 mV.
  • Output level : 3 V.
  • Output frequency: 9,6  1 MHz.
slide18

Phase Demodulator

  • Input frequency : 9,6 MHz
  • Demodulation: BPSK (Binary Phase Shift Keying).
  • Bit rate: 660Kbps.
  • BER (Bit Error Ratio): 10-6.
  • Output level: TTL.
slide19

Bit Synchronizer and NRZ-M decoder

+ Clock signal recovery.

+ NRZ-M (Non Return to Zero) decoding.

+ Bit rate : 660 Kbps.

slide20

Frame Synchronizer and PN-code decoder

  • Frame synchronization signal detection.
  • PN (Pseudo-Random Noise) decoding.
  • Serial to parallel conversion.
slide21

PC Ingestor module (1)

  • Input signal:

+ 8 bit data.

+ Byte clock signal.

+ Frame synchronization.

  • Address decoding.
  • RAM buffering.
slide22

RAM1 buffer

Frame

Synchr-onizer

8-bit parallel data

Switching System

byte clock

Interface

Frame Sync.

Address

PC

RAM2 buffer

PC Ingestor module (2)

slide23

Pictures on HRS-200

designed and manufactured

by STAC

slide26

GMS-5 images

received by HRS-200

slide27

Full-disk image

(IR2 image at 11:36 local time November, 14th, 2001)

slide28

Vietnam

(VIS image at 12:12 local time March, 19th, 2002)

slide29

Vietnam

(composite image at 11:00 local time November, 10th, 2001)

slide30

FY-2 images

received by HRS-200

slide31

Full-disk image

(IR channel at 16:30 local time September, 18th, 2000)

slide32

Vietnam

(VIS image at 14:29 local time September, 16th, 2000)

slide33

Composite image

(at 14:29 local time September, 16th, 2000)

slide34

GROUND receiving STATION

For

NOAA series

Of

POLAR orbiting satellites

slide35

NOAA satellite

technical specifications

Frequency:

NOAA 12: 1698.0 MHz

NOAA 14: 1707.0 MHz

NOAA 16: 1698.0 MHZ

NOAA 17: 1707.0 MHz

slide36

NOAA satellite

technical specifications (Cont’d)

  • Period: 102 minutes
  • Spectral characteristics: 5 channels (1 visible and 4 infra-red channels)

Channel Wavelength (m)

1 0.58 – 0.68

2 0.725 – 1.00

3 3.55 – 3.93

4 10.50 – 11.50

5 11.50 – 12.50

slide37

HRS-201 hardware

The hardware consists of:

  • Tracking antenna and controller.
  • LNA (Low Noise Amplifier).
  • Amplifier and down converter I.
  • IF amp. and down converter II.
  • Phase Demodulator.
  • Bit /Frame Synchronizers and Decoders.
  • PC Ingestor.

LAN (Local Area Network) is optional.

the block diagram of hrs 201

IF Amp. And Converter

II

Phase Demodulator

Amplifier and Down-Converter

I

Bit

Synchronizer

Frame Synchronizer

PC Ingestor

Satellite tracking-antenna controller

The block diagram of HRS-201

NOAA 12, 14, 16, 17

LNA

antenna39
Antenna
  • Type: parabolic, adjustable azimuth and elevation.
  • Diameter: 1,5 meters.
  • Polarization: helical.
  • Frequency range: 1670 – 1710 MHz
  • Gain: 25 dB.
  • Impedance : 50 Ohm.
lna low noise amplifier
LNA (Low-Noise Amplifier)
  • RF Input: 1670 – 1710 MHz.
  • Gain : 33 dB.
  • Noise : < 0,5dB.
amplifier and down converter i
Amplifier and down converter I
  • RF input: 1670 – 1710 MHz.
  • RF output : 68 MHz.
  • Gain : > 30 dB.
slide42

IF amplifier and Down-Converter II

  • Input frequency : 68 MHz.
  • Bandwidth : > 2 MHz.
  • Output frequency: 20 MHz
slide43

Phase Demodulator

  • Input frequency : 20 MHz
  • Demodulation: PSK-PLL (Phase Shift Keying – Phase Locked Loop).
  • Bit rate: 665.4 Kbps.
  • BER (Bit Error Ratio): 10-6.
  • Output level: TTL.
slide44

Bit Synchronizer and Manchester decoder

+ Clock recovery.

+ Manchester decoding.

+ Bit rate : 665.4 Kbps.

frame synchronizer
Frame Synchronizer
  • Frame synchronization detection.
  • Serial to parallel conversion.
slide46

PC Ingestor module (1)

  • Input signal:

+ 10 bit data.

+ Byte clock signal.

+ Frame synchronization.

  • Address decoding.
  • RAM buffering.
slide47

RAM1 buffer

Frame

Synchr-onizer

8-bit parallel data

Switching System

byte clock

Interface

Frame Sync.

Address

PC

RAM2 buffer

PC Ingestor module (2)

antenna controller
Antenna controller
  • Adjust azimuth and elevation angles to track the NOAA satellite orbits.
  • Interfaced to PC through serial port.
hrs software
HRS software

4 main modules:

  • Image receiving module.
  • Image pre-processing and displaying

module.

  • Image processing module.
  • Application module.
conclusions
Conclusions
  • HRS-200 and HRS-201: the 1st satellite receiving systems designed and manufactured in Vietnam for capturing high-resolution images from GMS-5/FY-2/MT-SAT and NOAA satellite series.
  • HRS-200 and HRS-201, both hardware and software are developed by STAC.
conclusions cont d
Conclusions (cont’d)
  • HRS-200 and HRS-201 have the open architecture and its modules based on state-of-the-art micro-electronics techniques, therefore they have advantages:

-> Integration of other professional modules.

-> High stability and reliability, easy for installation, reparation and up-gradation.

conclusions cont d59
Conclusions (cont’d)
  • HRS-200 and HRS-201 software meets almost the user’s requirements
  • HRS-200 and HRS-201 software structure is easy to master

so users might develop their own application modules to fulfill various tasks: weather and typhoon forecasting, Sea Surface Temperature (SST) determination, flood monitoring, vegetation index calculation,etc.

  • High adaptability to Vietnam’s conditions.
stac space technology application center
STAC - Space Technology Application Center

Contact information:

Space Technology Application Center ( STAC ),

Institute of Physics,

National Center for Science and Technology of Vietnam.

Address: No 18,Hoang Quoc Viet Road,

Cau Giay Dist., Hanoi, VIETNAM

Tel : +84 4 756 2942.

+84 4 8360443

Fax : +84 4 756 4483

E-mail :srg@hn.vnn.vn

Website: http://www.iop.ncst.ac.vn