OPS Forum Autotrack 01.09.2006
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OPS Forum Autotrack 01.09.2006

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A new architecture for the ESTRACK autotrack system will be presented, which can be flexibly tailored to varying operational scenarios such as critical LEOP activities or routine support to near......

A new architecture for the ESTRACK autotrack system will be presented, which can be flexibly tailored to varying operational scenarios such as critical LEOP activities or routine support to near earth/deep space missions.

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  • 1. M. Lanucara, OPS-GSY OPS-G Forum September 1th, 2006
  • 2. Introduction. Fundamentals of monopulse autotrack. Architecture of the present autotrack system in ESTRACK. System guidelines for the new autotrack concept. Future architecture of the autotrack system. Comparison between new and present architecture. Deployment plan. Completed/outstanding tasks. Conclusions. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 2
  • 3. Introduction M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 3
  • 4. Autotrack is the capability of an antenna to stay pointed in direction of a moving satellite, only based upon the reception of the on-board transmitted downlink signal, unmodulated or modulated with telemetry according to a remnant or suppressed carrier modulation scheme. Autotrack does not require pointing predictions (apart from initial acquisition). Many implementations are possible, “monopulse” autotrack widely used due to good tracking performances. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 4
  • 5. a) Correct pointing during LEOP or critical phases: ensuring correct pointing to the satellite, if the predicted pointing elements are highly degraded, wrong or simply not available. b) Provision of antenna angles: measuring the satellite position in the plane of sky, providing time-tagged antenna angles for orbit determination purposes. c) Telecommunications link improvement: improving the end-to-end telecommunications link by minimising the ground station tracking error, during any mission phase. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 5
  • 6. a) Correct pointing during LEOP or critical phases: fulfilled in S-Band by the 15m antennas, harming conditions originated from: Transitions between coherent and non coherent transponder operations. High Doppler dynamics. High signal-to-noise (SNR) ratio dynamics. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 6
  • 7. b) Provision of antenna angles: fulfilled in S-Band by the 15m antennas, measurement affected by errors: Systematic errors in the pointing. Jitter in the measurement due to incorrect raw data sub sampling. c) Telecommunications link improvement: not strongly required for the S-Band routine support due to the good program track performances of the 15m antennas. Envisat/ERS2 use the S- Band downlink for autotrack in order to improve the X-Band downlink. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 7
  • 8. To replace obsolete elements of the present system. To increase the robustness of the autotrack function during critical phases. To consolidate the existing functionality at higher frequency (use of X-Band or Ka-Band). To extend the existing functionality to new scenarios (deep space missions). To ensure proper maintainability of the system in the future years. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 8
  • 9. Show the new architecture for the ESTRACK autotrack system. Applicability is straightforward for the 15m antennas. Reference to the present system is made in the presentation, focusing on the “less obsolete” autotrack systems deployed in ESTRACK, i.e. Kourou, Perth and Redu. Applicability of the concept to the 35m antennas is addressed. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 9
  • 10. Fundamentals of monopulse autotrack M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 10
  • 11. Purpose of the monopulse system: detect signals proportional to the tracking error components (el and xel). Transform the error signals into Azimuth (az) and Elevation (el) errors, to be used within the servo control Reference: M. Gaudim, Design and Performance of the Monopulse Pointing loop. System of the DSN 34-Meter Beam-Waveguide antennas, TMO Progress report 42-138, August 15, 1999 M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 11
  • 12. Practical implementation: Primary detection in the feed: pointing misalignment → high order modes, whose energy is extracted in the tracking mode coupler. Magnitude of the extracted signal proportional to the off-pointing (θF). Full orientation (θF and φF) resolved by detecting the same high order mode at different orientations or by using distinct high order y modes. φF z θF x M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 12
  • 13. Phase Amplitude Reference: VIL4 - FATR2 meeting February 2004 - Ka band, presentation by Telecom LAB Italia M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 13
  • 14. Misalignment information available at the output of a hybrid network as modulation of the difference signal in a phase quadrature scheme. For a simple sinusoidal signal: Σ (t ) = 2 P cos (ω c t + φc ) ∆ (t ) = 2 P γθ F cos (ω c t + φ F + φ c ) = 2 P γθ F cos φ F cos (ω c t + φc ) − 2 P γθ F sin φ F sin (ω c t + φ c ) The demodulation of the misalignment information is made in the tracking receiver, using the sum signal as reference. Coordinate transformation is required to pass from the feed to the az- el coordinate system. Loop is closed in the servo system. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 14
  • 15. Reference: M. Gaudim, Design and Performance of the Monopulse Pointing System of the DSN 34-Meter Beam-Waveguide antennas, TMO Progress report 42-138, August 15, 1999 M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 15
  • 16. Differential phase and gain errors along the sum and difference downlink paths alter the misalignment information. Differential gain errors can be easily eliminated at installation. Differential phase errors cannot be eliminated, the differential delay between the sum and the difference downlink paths has to be minimised, the residual phase error over frequency must be compensated via calibration tables. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 16
  • 17. Two possible demodulation modes: Cross-correlation and PLL. In PLL the remnant carrier of the sum signal is reconstructed by using a phase-locked loop, prior to correlation with the difference signal. PLL mode allows tracking in lower signal-to-noise scenarios than cross- correlation mode. Cross-correlation mode is insensitive to carrier acquisition and tracking issues. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 17
  • 18. Architecture of the present system M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 18
  • 19. FEC (via SMC) Template for present system X Phase ADLS M&C/AGC S5 SLNA1 S13 Y FEC shifter RHC S7 TRRX Mode DPLX1 SDC TDC OMT LHC Phase Σ1 coupler DPLX2 SLNA2 shifter S14 TE01 TM01 Σ2 δXEL,δEL Phase TRK enbl Program FEC Hybrid (via SMC) shifter ∆ Pol. track/Servo Select M&C RHC LHC S15 FEC (via SMC) FEC FILTER SLNA FEC FEC Front-end S/X-BAND S8 3 Equipment FEED on M&C X SMC interface XLNA1 Phase ADLS All S6 shifter switches RHC Y and LNAs Mode DPLX1 XDC MER OMT LHC Phase Pol. coupler DPLX2 XLNA2 shifter AER Select TE210° TE2145° δXEL,δEL STC Phase TRK enbl Hybrid FEC shifter (via SMC) APEX RHC LHC FILTER XLNA3 DRIVE SYSTEM SERVO POWER δXEL,δEL δXEL,δEL AZIMUTH AZIMUTH TRK enbl TRK enbl S9 ACU SCU DRIVE SYSTEM SERVO POWER Program ELEVATION ELEVATION track/ M&C M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 19
  • 20. Autotrack system is complex. The full system is located in the antenna (in AER and in the apex cabin). There are many different types of receivers in ESTRACK (supplied along the years by BTM, MBB, SMP), based on either analogue (KIR-1, MSP, VIL-1, VIL-2) or digital (PER, KRU, RED) technology. There are several single points of failure for the autotrack function (e.g. all down conversion and amplification elements of the tracking channel, as well as the tracking receiver) . M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 20
  • 21. All non-RF signals are transmitted over dedicated analogue or digital interfaces. Main phase and amplitude calibration Conducted by the front-end Integrator after major upgrades. Requires the use of an external calibration tower. Phase calibration values are stored in the front-end controller. Effectiveness of the present procedure is doubtful in X-Band, the procedure itself is under revision for such a band. • Spot checks conducted before mission support, at specific frequencies of interest. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 21
  • 22. System Guidelines for the new architecture M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 22
  • 23. Scope of the system guidelines: Implementing the high-level objectives of the autotrack function. Incorporating new available tools related to the autotrack function in one homogeneous system. Maximising the use of existing infrastructure elements. Minimising risks linked to the introduction of a new architecture. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 23
  • 24. 1. Full compatibility with the present system, from a functional and performance point of view. 2. Introduction of combined autotrack mode, in addition to the present “direct autotrack”, for telecommunication link improvement. 3. Introduction of conical scan as tracking mode, for validation prior to use for 35 meters antennas. 4. Improvement and automation of the phase calibration function. 5. Improvement of the accuracy of the antenna angles tracking products. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 24
  • 25. 6. Increase of reliability of the autotrack function by adding redundancy for units that are presently single points of failures. 7. Increase of robustness of the autotrack system against planned or unplanned changes of the operational mode of the transponder affecting the frequency of the downlink signal. 8. Use of autotrack for high Doppler rate and low SNR scenarios. 9. Maximum re-use of proven infrastructure elements. 10. Mitigation of risks related to the operational phase-in of the new concept. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 25
  • 26. Future architecture of the autotrack system M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 26
  • 27. 1. Introduction of the new concept in addition to the existing tracking system in operational stations in order to fulfil continuity. 2. Extensive comparative tests. 3. First deployment proposed for Maspalomas station in conjunction with the planned station upgrade. 4. Progressive phase-out of the existing system. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 27
  • 28. X S-Band Ch1 ADLS FEC X Channel Ch2 M&C/AGC IFMS1 Y FEC ADLS LDC1 SDC Ch1 TDC TRRX Cross-pol S-Band Σ1 X X X setting SMC Y Channel Ch2 Y Y Y δXEL,δEL ∆ ∆ ∆ Σ2 Program track TRK enbl and ACU M&C SDC X Autotrack/ S-Band Ch1 Y Link message Ch2 ∆ Channel ADLS ∆ Pol. Autotrack/ (LAN) Select Link message (LAN) MCM STC, MMI FEC XDC X APEX FEC SMC Antenna Y IFMS2 Switches Pol. selection position LDC2 (digital) (LAN) Cross-pol and LNAs SMC ∆ ∆ ∆ setting X-Band Ch1 δXEL,δEL X Channel Ch2 TRK enbl SDC ∆ Y Y Y FEC X X X X IFMS Front-end Autotrack/ XDC M&C/Cross-pol Equipment X-Band ADLS Link message Ch1 Ch2 Setting (LAN) on M&C XDC ∆ (LAN) Y Channel Y interface MCM Autotrack/ X-Band Ch1 Link message Ch2 ∆ Channel (LAN) LAN infrastructure ADLS AER Tracking VLAN MER IFMS1 Parts of the existing ACU2 STC IFMS2 autotrack system not subject SERVO SYSTEM ACU1 MCM to upgrade/modification FECA/B δXEL,δEL (ana) Parts of the existing ground TRK enbl (ana) LAN infrastructure station equipment re-used for the new autotrack system Station VLAN Program track and ACU M&C(LAN) IFMS MMI IFMS MMI Parts to be added/upgraded MCM MMI MCM MMI for the new autotrack system Antenna position FEC MMI LAN infrastructure FEC MMI (LAN) Tracking VLAN X Σ1 Engineering VLAN Engineering VLAN Y Σ2 Autotrack/link Station VLAN message (LAN Tracking VLAN physical port M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 28
  • 29. PLL/cross-correlation tracking mode switch Σ1 PLL IFMS Template for new architecture (functional) X IF sampling Σ1 IF Sum selection switch Autotrack/link message filter FFT for Σ Monopulse Post Amplitude Tracking/ PLL corr. corr. /phase link i/f D/L Σ2 PLL filter calibr. handling chain Y Doppler Feed pred. Link (SNR, and ∆ SNR, AGC, AGC, PLL) Σ2 IF switch Σ/∆ filter phase lock network delay loop, sum equal. selection information ∆ X/Y crossing FEC ∆ IF filter F-E pol TRRX i/f crossing Sum selection handling SMC F-E ACU redund. Direct __t ACU auto (·) Extended Switch management track Conv. to δEL, δXEL Conv. to TRRX i/f Tracking Calibr. handling AZ/EL metric antenna handling errors __t Antenna Comb. (·) errors transf. coordin. TRRX i/f Antenna Conical velocity auto handling Scan ctrl loop track Program Program track data Program Tracking track FEC i/f ACU i/f track info. handling handling Visual. Encoders position Antenna position M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 29
  • 30. Existing tracking system in antenna is kept as fall-back for validation phase. Existing IFMSs are used as tracking receivers. Existing L-Band telemetry down converters are used for tracking. Sum and difference signals are transmitted cross-site. New Switch M&C unit (SMC) is developed. Servo Control Unit is deleted, cold redundancy is established for the Antenna Control Unit (ACU) hardware. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 30
  • 31. Interfaces moved/built over local area network: Autotrack/link message, used for transmission of tracking errors and other information (UDP). Interface SMC → IFMS, used for front-end polarisation switch selection (TCP/IP). Interface ACU → FEC, used for transporting the real-time antenna positions (UDP). existing traffic FEC ↔ ACU, used for program track and servo M&C (TCP/IP). M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 31
  • 32. Local man machine interfaces (MMI) for the IFMS and the MCM are installed in AER. Combined autotrack is introduced. Extended calibration functions are introduced as part of FEC and ACU → automatic phase calibration during a satellite pass. Phase (and amplitude) calibration tables are stored on the IFMS. Conical scan is introduced as part of the FEC. Detailed requirements still TBD, all required interfaces are in place. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 32
  • 33. In Combined autotrack the program track data are used as baseline information for tracking. Tracking error signals from tracking receiver correct for slowly varying offsets between predicted and actual trajectory (e.g. deformations due to temperature, systematic pointing errors, small errors in predicts). Combined autotrack mode requires the integration of the tracking error signals over time. Suitable for improving autotrack robustness and telecommunications link in routine passes. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 33
  • 34. Conical scan is an autotrack technique widely used in the NASA Deep Space Network (DSN). Scan pattern is superimposed on the program track trajectory, while retrieving time-tagged link and antenna position information. Processing of such information allows estimating the tracking error and the tracking error variance. Conical scan autotrack requires only link data (level and signal to noise ratio) as feedback information. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 34
  • 35. Guideline Fulfilment Remarks Compatibility High Present autotrack mode is migrated in the between new architecture, new tracking modes are present and added. new Analogue autotrack not available in the architecture. new concept. Risk mitigation: the antenna control unit is made redundant. In case of autotrack on a dedicated beacon, the redundancy of the telemetry function is degraded. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 35
  • 36. Guideline Fulfilment Remarks Combined Full Implemented in the ACU/FEC. autotrack and conical scan. Extension of High Implemented in the FEC, automatic the phase/ calibration during a pass will be possible. amplitude Existing problems concerning the use of calibration calibration tower at X-Band are not function. completely removed, presently under investigation. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 36
  • 37. Guideline Fulfilment Remarks Improvement High Reduction of jitter component expected of antenna due to higher raw sampling rate, prior to angles filtering and sub-sampling. accuracy. Reduction of systematic point error expected via use of the extended calibration function. Quantitative improvement requirements should be formulated. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 37
  • 38. Guideline Fulfilment Remarks Increase of redundancy High Tracking L-Band down for the autotrack converter and the tracking function. receiver are hot redundant, the antenna control unit is cold redundant. Robustness against High Two redundant tracking chains planned/ unplanned allow diversifying the autotrack changes of the configuration. transponder operational mode. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 38
  • 39. Guideline Fulfilment Remarks Use of autotrack High In PLL mode, all IFMS existing for high Doppler capabilities are used. rate and low SNR In cross-correlation mode, use of small scenarios pre-correlation bandwidths (minimum is 50 kHz today, it will be 5 kHz on IFMS ATRK) will be possible in combination with Doppler presteering. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 39
  • 40. Guideline Fulfilment Remarks Re-use of existing Full New tracking receiver is integrated in infrastructure the IFMS. elements. Signal interfaces are moved to LAN over the available LAN infrastructure, wherever feasible/convenient. Mitigation of risks Full The present system can be left for operational available until the new architecture is phase-in. fully validated. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 40
  • 41. STC FEC NEW NORCIA X STC X SLNA1 LDC1 IFMS1 SDC Link message LHC/RHC Y S-Band SPOL OMT DPLX1 Y Program track DPLX2 SLNA2 X STC and ACU M&C feed RHC/LHC IFMS2 LDC2 LAN infrastructure ADLS Y Link message Tracking VLAN X Link message XLNA1 XDC X STC LHC/RHC IFMS3 Antenna X-Band XPOL OMT DPLX1 Y LDC3 Link message position feed DPLX2 XLNA2 Y RHC/LHC ACU2 Front-end MCM devices FEC MCM FEC FEC ACU1 SERVO SYSTEM Program track and ACU M&C CEBREROS Antenna position X XLNA1 XDC Link message RHC/LHC FEC X-Band OMT DPLX1 XPOL Y feed DPLX2 XLNA2 X STC STC LHC/RHC LDC1 IFMS1 FEC ADLS Y Autotrack/ X ∆ Link message Program track FEC KLNA1 KDC X and ACU M&C IFMS2 STC RHC/LHC LDC2 LAN infrastructure Ka-Band Mode KPOL OMT Y Y Autotrack/ feed coupler KLNA2 ∆ Link message Tracking VLAN Autotrack/Link LHC/RHC X message IFMS3 STC RHC LHC ∆ Y LDC3 KLNA3 Autotrack/ Antenna ∆ Link message position Switch FEC control ACU2 IFMS MCM Front-end FEC FEC MCM devices ACU1 Switch Parts of the existing ground Control Program track Tracking VLAN station equipment re-used and ACU M&C for the new autotrack system SERVO SYSTEM Station VLAN Antenna position Tracking VLAN physical port Parts to be added/upgraded for the new autotrack system Autotrack/Link message M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 41
  • 42. New Norcia A monopulse system cannot be installed for S/X-Band unless of major refurbishment of the feed system (no tracking coupler). Conical Scan is a possible option for both bands. The time-tagged link information required by Conical Scan is embedded in the same autotrack/link message introduced for the 15m antennas. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 42
  • 43. Cebreros The ground station is prepared for a monopulse system in Ka- Band. Conical Scan is an alternative option in Ka-Band, and is the unique choice in X-Band. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 43
  • 44. Comparison between new and present architectures M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 44
  • 45. The new concept has a wider applicability than the present one, autotrack function is extended to deep space scenarios. New tracking modes and functions are possible, like Conical Scan and the extended phase calibration. The reliability of the autotrack function increases. The ground station configuration can be diversified during critical phases. Improvement of antenna angles quality is expected. The architecture is easily extendable to the 35m antennas. Re-use of existing infrastructure elements ensures full maintainability in the future years. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 45
  • 46. Complexity of local operations will increase due to the distributed character of the new architecture. The procedure for phase and amplitude calibration will require adaptation in respect the one applicable today. Need for increasing the number of calibration curves is expected (this is the case also for the present system, in X-Band). M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 46
  • 47. Deployment plan M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 47
  • 48. Deployment in Maspalomas in July/August 2007, new system is introduced as back-up of the existing one. Existing tracking receiver is replaced with a conventional COTS unit. Practical comparison between new architecture and existing system is possible during true satellite operations. Replacement of the conventional tracking receiver is justified by obsolescence of the present unit. Other stations belonging to ESTRACK (15m and 35m) are upgraded taking into account the planned station utilisation. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 48
  • 49. ESTRACK terminal(*) Acronym KIR-1 KRU-1 MSP-1 PER-1 RED-1 CEB-1 NNO-1 DS3 Downlink band(s) S/X S/X S/X S/X S X/Ka S/X X(/Ka) Proposed architecture Modernised Modernised Short/medium term (until New architecture: New architecture: present present TBD once the supported 2009) Full new Full new Full new Monopulse for Ka-Band Conical scan for S/X-Band system system downlink bands are architecture architecture architecture Conical scan for X/Ka- selected Long term TBD TBD Band TBD Missions (to be launched or still flying after mid 2007) ERS2 XMM CLU ENV INT MEX ROS VEX SOHO ULY METOP1 ISS-ATV HP MSG3 LISA METOP2 GAIA MSG4 ExoMars BC METOP3 (*) Only 15m and 35m antennas are shown, and related supported missions. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 49
  • 50. ID Start Finish 2006 2007 2008 Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May 7 Fri 28/07/0 Fri 29/06/0 Front end 8 Mon 04/12/ Fri 15/12/ 04/12 Feed exchange 9 Fri 28/07/ Tue 13/02/ 28/07 COTS tracking recevier 10 Fri 01/09/ Thu 31/05/ 01/09 SMC development 11 Mon 01/01/ Fri 29/06/ 01/01 Front-end upgrade design and procurement 12 Mon 16/04/0 Fri 29/06/0 LAN infrastructure 13 Mon 16/04/ Fri 29/06/ 16/04 LAN upgrade design 14 Mon 05/02/0 Fri 30/03/0 ACU 15 Mon 05/02/ Fri 30/03/ 05/02 ACU modification design 16 Mon 01/01/0 Thu 31/05/0 FEC 17 Mon 01/01/ Thu 31/05/ 01/01 FEC (conical scan, auto calibr, angle OCC i/f and post p 18 Mon 19/06/0 Fri 25/05/0 IFMS TRK 19 Mon 19/06/ Tue 13/02/ 19/06 IFMS ATRK development 20 Mon 26/03/ Fri 06/04/ 26/03 MSP IFMS upgrade to RRD 21 Mon 21/05/ Fri 25/05/ 21/05 IFMS ATRK GDSP upgrade (preparation) 22 Mon 22/01/0 Fri 15/06/0 STC 23 Mon 22/01/ Fri 02/03/ 22/01 STC standard tailoring - IFMS ATRK 24 Mon 26/03/ Fri 06/04/ 26/03 STC upgrade to RRD 25 Mon 07/05/ Fri 15/06/ 07/05 STC standard tailoring - FEC 26 Mon 02/04/0 Fri 31/08/0 On-site activities 27 Mon 02/04/ Fri 06/04/ 02/04 ACU upgrade 28 Mon 04/06/ Fri 15/06/ 04/06 Antenna A/C upgrade 29 Mon 02/07/ Fri 31/08/ 02/07 Front-end upgrade - on site activities 30 Mon 02/07/ Fri 20/07/ 02/07 MSP LAN upgrade 31 Mon 16/07/ Fri 03/08/ 16/07 MSP FEC upgrade 32 Mon 16/07/ Fri 03/08/ 16/07 MSP IFMS upgrade 33 Mon 16/07/ Fri 03/08/ 16/07 MSP STC upgrade M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 50
  • 51. Completed / outstanding tasks M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 51
  • 52. Study project for IFMS tracking receiver: a prototype has been developed and installed in VIL-4 IFMS. Definition of a system concept for the new autotrack system architecture, presented at EUTF on January 2006. Tracking tests using the IFMS prototype tracking receiver with Smart-1 (KaTE), Integral, ERS-2 and Envisat: the possibility to transmit tracking errors over the LAN has been demonstrated. Analysis and tests about transmission of sum and difference signals cross-site. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 52
  • 53. Start of all hardware subsystems development/procurement IFMS development started 19th of June 2006, completion expected 13th February 2007 (SAR). SMC development will start 1st week of September, completion expected end of May 2007. COTS tracking receiver, technical specification was sent to potential suppliers end of July 2006. Definition of all ICDs for new/modified interfaces. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 53
  • 54. Definition of an implementation plan for the Maspalomas upgrade. Completion of X-Band autotrack verification tests in Perth. Definition of technical specifications for new autotrack-related FEC and ACU functions and start of related development. STC standard and operational tailoring. LAN upgrade design. Deployment in Maspalomas. Deployment in ESTRACK according to an agreed deployment plan. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 54
  • 55. The new architecture for the ESTRACK autotrack system can be flexibly tailored to several operational scenarios, like critical LEOP activities or routine support to Near Earth/Deep Space missions. Maximum re-use is made of proven infrastructure elements, which ensures maintainability in the long term, and operational reliability. Attention is given to the risks associated to the operational phase-in of the new system, and to the identification of the related mitigation measures. M. Lanucara, OPS-GSY Upgrade of ESTRACK Autotrack system OPS-G Forum 1/9/2006 Slide 55