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Proposed CGMS High Level Priority Plan (HLPP) 2016-2020 Presented to CGMS-43 WG I, agenda item WGI/7
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Overview Status of implementation of HLPP targets overseen by WG I
Target proposed to be considered achieved Proposed revisions to HLPP relevant to WG I
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Status of Implementation of HLPP
1.2 Coordination/Optimisation of data collection systems Status confirmed by WG-I 1.2.1 Coordinated participation in the activities of the International Forum of Users of Satellite Data Telecommunication Systems, to prepare the future use of the International Data Collection System (IDCS); Considered well covered by the activities of the International Forum of Users of Satellite Telecommunication Systems (SATCOM) and the participation of identified members of CGMS (e.g. WMO and EUMETSAT). EUMETSAT as designated CGMS rapporteur to the Forum will make regularly reports to WG-I in the areas of relevance to CGMS. It is planned to hold a SATCOM forum in September 2016. 1.2.2 Assess Data Collection Platform (DCP) and Argos Data Collection System (A-DCS) status and evolutions including International channels, taking into account requirements of tsunami alert systems and in-situ ocean observations (e.g. buoys); Considered well covered by the different working papers provided by the different WG-I members. Dedicated Inter-Sessional activity is intended to further address this subject, but has not taken place yet.
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Status of Implementation of HLPP
1.2.3 Share lessons learnt and share experiences on certification of DCS platforms (especially High Rate DCPs); No progress noted by WG. Discussions by the WG-I on the identified gap confirmed the need to maintain this topic in the HLPP and the intention to address it by dedicated Inter-Sessional meetings to progress on these topics. In preparing for first SATCOM forum, planned for 2016, the WG-I will work on DCS priorities 1.2.4 Share information on the development of their High Rate DCPs and share lessons learned on mitigating interference between DCPs; No progress noted by WG. Discussions by the WG-I on the identified gap confirmed the need to maintain this topic in the HLPP and the intention to address it by dedicated Inter-Sessional meetings to progress on these topics. In preparing for first SATCOM forum WG-I will work on DCS priorities 1.2.5 To confirm user requirements for sharing data/information delivered using DCS (outside the regional area). Evolve the mechanisms to share DCP data.
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Status of Implementation of HLPP
1.3 Radio Frequency (RF) Protection 1.3.1 Establish a coordinated position on the future of L-band services; Coordinated position presentations were made by EUMETSAT and NOAA at the NOAA users conference. Coordination in the positions is being achieved by the progress being made in the definition of the future systems (current systems are already designed and in most cases built and therefore no modifications can be expected). Actions in US for sharing L-band. Difficulties related to Spectrum Manager retiring at NESDIS. FCC is auctioning MHz band, currently used for HRPT. However mobile allocations require pairing with higher-frequency bands and the paired frequencies are currently not available, so it may limit industrial interest.
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Status of Implementation of HLPP
1.3 Radio Frequency (RF) Protection 1.3.2 Investigate how to mitigate Earth Exploration Satellite Service (EESS) X-band (8025 – 8400 MHz) congestion and coordinate interference assessments on a regular basis and, as necessary, establish inter-agency coordination mechanisms to facilitate sharing and use of this frequency band by LEO and GEO systems; “Note: This Target is not related to MetSats frequencies in XBand ( ) but only to EESS (8025 – 8400 MHz). EUM is not using or planning to use this band for their primary MetSats missions (MSG/MTG and Metop/Metop-SG). The band is used by Sentinel-3 and will be used by Jason-CS/Sentinel-6. However, the band 8025 – 8400 MHz is used by FY-3 for the DPT service and planned to be used by CMA for HRIT on FY-4. NOAA is using this band on SNPP for the SMD service and plans to use it for the science data downlink on GOES-R. The predominant use of the band 8025 – 8400 MHz for EESS missions of all space R&D agencies (by NASA (e.g. Terra) , ESA (e.g. Sentinels). Today the amount of missions (>100 missions in SFCG database) and, what it is also increasingly important, the needs of bandwidth of each one of the new missions is not allowing a segmentation of the band by “organisations” as it was done for the DCP band, as outlined in CGMS-43 EUM-WP-04. For example, Sentinel 3 is occupying x2 times 140 MHz in the 375 MHz band (central frequencies are 8095 and 8260 MHz). To be noted that SFCG is having dedicated procedure to “coordinate” new systems at the frequency assignment level that facilitates to the maximum possible extent the co-existence of mission on the selected freqs.“ WG-I will discuss concrete actions at CGMS-44
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Status of Implementation of HLPP
1.3 Radio Frequency (RF) Protection 1.3.3 Investigate how to mitigate MetSats X-band (7750 – 7900 MHz) congestion and coordinate interference assessments on a regular basis and, as necessary, establish inter-agency coordination mechanisms to facilitate sharing and use of this frequency band by LEO and GEO systems; Due to the initially limited bandwidth available (until WRC-12: 7750 – 7850 MHz = 100 MHz) and the different usage concepts (main data dumps vs. direct readout) a separation of the different missions was not possible when starting to utilize this band. Thus, Resolution SFCG 19-7R4 was introduced to set force some principle for using this band and through this to ensure the coexistence of the different missions in this band. With the next generation of NGSO MetSat systems this band will be more homogeneously used for direct readout services, once Metop will be no longer operational (>2030). However, as the bandwidth requirements for direct readout services also has and will continue to increase significantly, the introduction of a frequency plan to fully avoid frequency overlap will be difficult to implement, even with the recent enlargement of the frequency allocation to MetSat to 150 MHz (7750 – 7900 MHz). Coordinated phasing of the equator crossing times between the different polar oribiting MetSat systems constitutes the most significant factor to mitigate the potential of interference between the systems and that with this the interference potential between the low number of MetSat systems using this band is very small. Future missions that are planned to use this band are announced within the SFCG through the yearly presentation of information on current and future planned missions of the individual SFCG member agencies and are further coordinated applying Resolution SFCG A12-1R3 on the procedures for inter-agency frequency coordination. WG-I will discuss concrete actions at CGMS-44
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Status of Implementation of HLPP
1.3 Radio Frequency (RF) Protection 1.3.4 Facilitate an effective preparation of national positions for the World Radio-communication Conference (WRC) favorable for the CGMS-related issues, including the protection of sensing frequencies in C-band. Considered well covered by the different working papers provided by the different WG-I members. This topic needs to be kept in the HLPP for securing adequate information flow inside CGMS on national and regional level preparatory activities (as well as the dedicated report from SFCG activities provided by CGMS Liaison representative in SFCG)
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Status of Implementation of HLPP
1.4 Coordination of Direct Readout Systems and Regional Retransmission Services In light of the proposed Best Practices for Support to Local and Regional Processing of DB Data, this section of targets should be reviewed 1.4.1 Evaluate the set of applicable (or TBD) standards for dissemination mechanisms in use by CGMS members and assess if there is a need, in view of future systems, to amend, modify or revise such standards (or to derive new ones); WG-I is currently addressing the issues through a series of dedicated Inter-sessional meetings. 1.4.2 Facilitate the transition to new direct readout systems (GOES-R, JPSS, FY-3, Meteor-M); No specific progress noted for GEO. For the LEO systems, the evolution of RARS and EARS to support the hyperspectral sounders of the new generation will facilitate the transition to new systems for the majority of users. At CGMS-44 a proposal for Best Practices for CGMS support to direct readout processing will be discussed in WG-I 1.4.3 Work together to define a set of recommendations seeking affordable future receiving stations or alternatives to direct read-out solutions; At CGMS-41, NOAA proposed to establish "an Ad Hoc Workstation Development Team to investigate new techniques and technologies to develop specifications to build affordable receive terminals", but this recommendation did not result in a CGMS action. WG-I to consider whether actions should be taken in this area.
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Status of Implementation of HLPP
1.4 Coordination of Direct Readout Systems and Regional Retransmission Services 1.4.4 Provide level-1 processing software packages, consistent with global processing software, for processing of Direct Broadcast data from the new generation of LEO satellites. -EUMETSAT is providing AAPP for Metop. -CMA is providing FY3L0PP and FY3L1PP for FY-3. -CIMMS/NOA is providing CSPP/IMAP, now supporting NPP, Metop and FY-3. -For other LEO satellites (e.g. Meteor) plans for the provision of pre-processing packages are still TBC 1.4.5 Further enhance the Regional ATOVS Retransmission Services (RARS) initiatives through inclusion of the NOAA Direct Broadcast Real Time Network (DBRTN) and an extension to advanced sounders for at least half of the globe Implementation plan for inclusion of advanced sounders has been agreed by the RARS implementation group (now renamed DBNet Coordination Group). The new NOAA direct readout initiative is a substantial contribution to advancing the provision of products from the advanced sounders. WG I,II and IV identified the need for strengthening the coordination of the NOAA initiative with RARS, and therefore it has been agreed to form a RARS Task Team to work in the next inter-sessional period. IMD has initiated the inclusion in RARS of three stations on the subcontinent. The US initiative has now received funding, focussed on US and adjacent areas for the foreseeable future. The DBNet CG agreed a number of actions to integrate the US DB initiative in the overall systems. WG-I has addressed the future coordination between its work and that of the DBNet Coordination Group, and consensus is that WG-I will address actions to be taken by CGMS members as satellite operators in support to DBNet and more general to local processing of LEO Direct Broadcast data, whereas all issues related to the coordinated development and operations of the DBNet regional components themselves will be addressed by the DBNet Coordination Group.
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Revision of the HLPP for the period 2016-2020
No targets overseen by WG I are proposed to be considered achieved
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Revision of the HLPP for the period 2016-2020
It is proposed to move the following target to section 1.4, as it is practice overseen by WG I Develop efficient standardized data handling for high-resolution imaging and hyper-spectral instruments, employing novel methods like dissemination of hyperspectral infrared data based on Principal Component Analysis. The Space Weather Task Team is proposing Investigate the possible improvement of the near real time acquisition and dissemination of radio occultation data for ionospheric space weather applications.
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WG I should Consider and comment on the status of implementation of the HLPP In light of discussions regarding Processing and Distribution of Direct Readout data, WG-I could consider reformulation of the targets in this area Consider the proposal for revision of the HLPP to cover the period
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Thank you for your attention!
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