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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

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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Design and manufacture of GROUND receiving STATIONs For Geo-stationary GMS-5 / MT-SAT / fy-2 and NOAA series polar orbi

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  1. 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 -

  2. 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.

  3. 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.

  4. 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 .

  5. 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.

  6. GROUND receiving STATION For Geo-stationary GMS-5 / mt-sat / fy-2 satellites

  7. 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.

  8. 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.

  9. FY-2 Satellite • Launched in June 25th 2000. • Stationed at 105 deg. E longitude and 35.800 km elevation above the Equator.

  10. 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.

  11. 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).

  12. The block diagram of HRS-200

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

  14. 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.

  15. Receiver

  16. 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

  17. 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.

  18. 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.

  19. Bit Synchronizer and NRZ-M decoder + Clock signal recovery. + NRZ-M (Non Return to Zero) decoding. + Bit rate : 660 Kbps.

  20. Frame Synchronizer and PN-code decoder • Frame synchronization signal detection. • PN (Pseudo-Random Noise) decoding. • Serial to parallel conversion.

  21. PC Ingestor module (1) • Input signal: + 8 bit data. + Byte clock signal. + Frame synchronization. • Address decoding. • RAM buffering.

  22. RAM1 buffer Frame Synchr-onizer 8-bit parallel data Switching System byte clock Interface Frame Sync. Address PC RAM2 buffer PC Ingestor module (2)

  23. Pictures on HRS-200 designed and manufactured by STAC

  24. The parabolic antenna (3.2m diameter)

  25. HRS-200 system

  26. GMS-5 images received by HRS-200

  27. Full-disk image (IR2 image at 11:36 local time November, 14th, 2001)

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

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

  30. FY-2 images received by HRS-200

  31. Full-disk image (IR channel at 16:30 local time September, 18th, 2000)

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

  33. Composite image (at 14:29 local time September, 16th, 2000)

  34. GROUND receiving STATION For NOAA series Of POLAR orbiting satellites

  35. 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

  36. 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

  37. 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.

  38. 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

  39. Antenna • Type: parabolic, adjustable azimuth and elevation. • Diameter: 1,5 meters. • Polarization: helical. • Frequency range: 1670 – 1710 MHz • Gain: 25 dB. • Impedance : 50 Ohm.

  40. LNA (Low-Noise Amplifier) • RF Input: 1670 – 1710 MHz. • Gain : 33 dB. • Noise : < 0,5dB.

  41. Amplifier and down converter I • RF input: 1670 – 1710 MHz. • RF output : 68 MHz. • Gain : > 30 dB.

  42. IF amplifier and Down-Converter II • Input frequency : 68 MHz. • Bandwidth : > 2 MHz. • Output frequency: 20 MHz

  43. 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.

  44. Bit Synchronizer and Manchester decoder + Clock recovery. + Manchester decoding. + Bit rate : 665.4 Kbps.

  45. Frame Synchronizer • Frame synchronization detection. • Serial to parallel conversion.

  46. PC Ingestor module (1) • Input signal: + 10 bit data. + Byte clock signal. + Frame synchronization. • Address decoding. • RAM buffering.

  47. RAM1 buffer Frame Synchr-onizer 8-bit parallel data Switching System byte clock Interface Frame Sync. Address PC RAM2 buffer PC Ingestor module (2)

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

  49. HRS-201 system

  50. Antenna system (Rotator mounted at the bottom of the disk)

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