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  • CALL FOR APPLICATIONS: Hosting sites for Multi-GNSS Monitoring Network

1.Introduction

1.1 Background
  a Multi-GNSS Monitoring Network (MGM-Net)
  • “MGM-Net” is the Multi-GNSS* tracking network which JAXA wishes to deploy globally for the following purposes;
    To improve Precise Orbit Determination (POD) accuracy, i.e. orbit and clock offset estimation for QZSS, contributing to the accuracy improvement for Precise Point Positioning (PPP) applications.
    To extend current POD function for GPS/QZSS to also include multiple GNSS constellations, and to generate error correction and integrity information which can be broadcast from QZSS to support the multi-GNSS demonstration campaign.
  • 60 multi-GNSS receivers (as described in Section 2.1) will be distributed globally to address the above objectives by JAXA. The network will be established over the period 2011-2013 in two steps;
    Step 1 (by the end of March 2012)
    The core network for QZSS observation, 20 sites (Group A) will be established in the Asia Pacific region.
    Step 2 (by the end of March 2013)
    The core network will be expanded for global coverage with added 40 sites (Group B), as well as by sharing global tracking data with the IGS multi-GNSS project (see below), for improving the accuracy of the orbit and clock offset estimation as well as increasing the redundancy and robustness of the network.
  • After completion of the network, the observed data and the generated products are to be shared among participants of the network as well as with the “Multi-GNSS Asia” (MGA) in order to support the development and demonstration of future multi-GNSS applications.
  • JAXA will join and contribute to the “Multi-GNSS Pilot Project” implemented by the International GNSS Service (IGS) in 2012. Data exchange with the IGS project will enhance the performance of the MGM Network.
* It is desired that all GNSS constellations be tracked by MGM-Net in future. However, GPS, Glonass, Galileo and QZSS are initially to be tracked since their Interface Control Documents (ICD) have been public since June 2010, the start date of JAXA’s multi-GNSS receiver procurement process.
  b Quasi-Zenith Satellite System (QZSS):
  • The Quasi-Zenith Satellite System (QZSS) is a regional space-based Positioning, Navigation and Timing (PNT) system that uses a constellation of satellites placed in multiple Inclined Geo-Synchronous Orbits (IGSO).
  • Its orbital characteristics were selected in order to provide enhanced GNSS availability as well as improved PNT performance in Japan and the surrounding area. The system is being developed by JAXA in partnership with other Japanese research institutes, following a phased deployment approach.
  • The current design is a three satellites constellation. The first satellite, named “Michibiki”, was successfully launched on September 11, 2010. Technical validation and application demonstrations have been conducted since December 2010.
  • Further information and detailed specification can be found in the document “Interface Specification for QZSS (IS-QZSS)”, available for download from the following web site.
    http://qz-vision.jaxa.jp/USE/is-qzss/IS-QZSS_12_E.pdf
  c Multi-GNSS Demonstration Campaign
  • The “Multi-GNSS Demonstration Campaign” has been proposed by JAXA at the United Nations International Committee on GNSS (ICG), and related multilateral meetings such as the Asia Pacific Region Space Agency’s Forum (APRSAF), and the Asia Pacific Economic Committee GNSS Implementation Team (APEC GIT).
  • The campaign, led by JAXA, aims to;
    Encourage and promote the introduction and utilisation of satellite PNT services in the Asia Oceania region through assistance to countries with the integration of GNSS services into their infrastructures.
    Promote new multi-GNSS utilisation and applications in the region, and provide feedback and needs requirements related to interoperability from the user communities to the GNSS signal providers.
    Encourage GNSS signal providers and users in the Asia Oceania region to jointly develop new applications and to carry out experiments or demonstration in this region.
    Support the IGS multi-GNSS project.
  • The campaign has three main components: 1) establishment of the multi-GNSS observation network, 2) development and demonstration of multi-GNSS applications, and 3) a workshop program. Multi-GNSS Asia (MGA) is an open organisation that has been established to assist in managing and promoting the above campaign activities. The following web site contains information about the campaign and MGA, http://www.multignss.asia/.
  • The MGM-Net, which this announcement calls for applications to host tracking sites, will provide raw observational data and products in order to contribute to the above campaign activities. Other multi-GNSS tracking sites in the region can become involved as a member of MGA. All sites will be required to make available RINEX formatted data to the IGS in support of its multi-GNSS project.
1.2 This announcement
 
  • The objective of the call for applications for hosting JAXA’s MGM-Net is;
    To establish a global cooperative network, by supporting current GNSS tracking network operators through the provision of upgraded multi-GNSS receivers. Hence that organisation’s knowledge and heritage for GNSS observation site operation can be harnessed.
    To promote QZSS, as well as multi-GNSS utilisation in the Asia and Oceania region. The established network will be used for demonstration activities, and can facilitate the promotion of multi-GNSS use in the region.

2.Equipment

2.1 Receivers
  JAXA will provide two types of JAVAD receiver.
a Hardware
DELTA-G3T SIGMAS-G3T
Weight 401g 1277g
Input / Output Serial port (RS232)
USB 2.0 device port
10BASE-T/100BASE-TX Ethernet port
External Reference Frequency input
Battery none internal Li-Ion batteries
Rate 10Hz
Further information:
http://javad.com/downloads/javadgnss/sheets/Delta_Datasheet.pdf
http://javad.com/downloads/javadgnss/sheets/SigmaS_Datasheet.pdf
  b Tracked signals
Tracking and positioning Tracking
GPS L1-C/A, L1P, L2C, L2P(Y), L5 L1C
GLONASS L1-C/A, L1P, L2-C/A, L2P
GALILEO E1, E5a
QZSS L1-C/A, L1-SAIF L1C, L2C, L5
  c Data formats
version QZSS format
NMEA 2.2, 2.3., 3.0 Prototype version can be output by JAVAD receiver. Format will be available. Real time output from receiver.
RINEX 2.10, 2.11,2.12(QZSS extension), 3.01 Prototype version can be output by JAVAD receiver. Format is available: http://qz-vision.jaxa.jp/USE/is-qzss/RINEXv2_QZSSext_NC.pdf The RINEX data can be acquired from JAVAD raw data by using JPS2RIN.
RTCM 2.x, 3.0 Prototype version can be output by JAVAD receiver. Format will be available. Real time output from receiver.
BINEX Prototype version is available: http://binex.unavco.org/binex_record_7f_x.html Real time output from receiver.
  d Software
Name Description
TriVU TriVU is a free application allowing the user to easily control JAVAD GNSS receivers http://javad.com/jgnss/products/software/trivu.html
JPS2RIN JPS2RIN software is converter from the company native JPS format files to RINEX 2.xx (including 2.10/2.11/2.12) , RINEX 3.0, and RINEX 3.01 format. Version 2.12 includes QZSS extension format. http://javad.com/jgnss/products/software/jps2rin.html
2.2 Antennas
  Participants can use two types of antenna provided by JAXA, or can also use their own antenna.
RingAnt-DM GrAnt-G3T
Weight 4.4kg 515g
Interface N-type TNC
Radome SCIGN Radome none
Cable 3m (TNC)
5m (TNC)
10m (TNC)
30m (N-type)
N-Type to TNC cable
Further info: http://www.javad.com/jgnss/products/antennas/

Phase Center Variation (PCV) file for both antennas are found in icg08.atx file. It can be obtained following;
ftp://igscb.jpl.nasa.gov/pub/station/general/igs08.atx


3.Call for Hosting Site(s)

3.1 Intended number of sites
  a. Group A; 20 sites
b. Group B; 40 sites
3.2 Criteria for eligibility
  Applicant who meets following criteria can submit an application using the form in Appendix 1.
  • An organisation or site operating existing continuous GNSS observation receiver or network of receivers
    Network operator can submit an application for several sites, with agreement of each site’s owner or custodian.
    Single site operator can also submit application.
  • Purpose of application should be limited to peaceful research, development, and demonstration of GNSS applications by using observation data and products shared among all participants.
3.3 Requirements for Hosting Site
  Group A sites will be deployed during 2011, and the additional 40 Group B sites will be deployed in 2012.
a.Requirement for core network 20 sites
   Mandatory requirements:
  • QZSS Visibility: A QZSS satellite must be observed from the site more than 30% of the day. Figure 3.3-1 is a Global Visibility Map for QZS-1, where the contour line indicates the percentage of time when QZS-1 is observed with a more than 10 deg elevation angle at that location.
  • Connectivity: The site must have a continuous internet connection. The communication link should be capable of sending observation data for the multi-GNSS constellation. (At minimum, ISDN (64Kbps) line is required.)
  • Provision of RINEX formatted data to the IGS in support of its multi-GNSS project.
  • Items described “should do or should not do” in Sections 2.1, 2.2 and 2.3 of the “IGS Site Guideline” are to be considered essential.
    http://igscb.jpl.nasa.gov/network/guidelines/guidelines.html
    Especially, in the case that a new site or new antenna location is proposed, the requirements for the location described in Section 2.3 should be met.

   Desirable requirements:
  • Items described “desirable or preferable” in Sections 2.1, 2.2 and 2.3 of “IGS Site Guideline” are considered as desirable items. Following items are considered very favourably of applications;
    Good geometry for QZSS orbit determination.
    Frequency standard, i.e. the site can provide a reference frequency to receiver.
    Already an IGS reference site.
    sCo-location with other geodetic observatories or infrastructure such as SLR, VLBI, DORIS.

b.Requirement for additional 40 sites
   Mandatory requirements:
  • Connectivity: The site must have a continuous internet connection. The communication link should be capable of sending observation data for the multi-GNSS constellation. (At minimum, ISDN (64Kbps) line is required.)
  • Provision of RINEX formatted data to the IGS in support of its multi-GNSS project.
  • Items described “should do or should not do” in Sections 2.1, 2.2 and 2.3 of “IGS Site Guideline” are to be considered essential.
    http://igscb.jpl.nasa.gov/network/guidelines/guidelines.html
    Especially, in the case that a new site or new antenna location is proposed, the requirements for the location described in Section 2.3 should be met. However, a monument for antenna installation may not be mandatory requirement for the additional 40 sites, and a simplified antenna set up may be allowed.
  • QZSS visibility is not a mandatory requirement.

   Desirable requirements:
  • Items described “desirable or preferable” in Sections 2.1, 2.2 and 2.3 of “IGS Site Guideline” are considered desirable items. Following items are considered very favorably of applications;
    Good geometry for QZSS orbit determination (if visible).
    Frequency standard, i.e. the site can provide a reference frequency to receiver.
    Already an IGS reference site.
    Co-location with other geodetic observatories or infrastructure such as SLR, VLBI, DORIS.
    Time rate of QZS signal reception(Visibility more than 10 deg elevation angle)
    Figure 3.3-1 QZSS Visibility

4.Cost Allocation between JAXA and Hosting Organisation

The project is to be managed on the basis of mutual investment by the two parties. No funding will be transferred between parties except under special circumstances. Following task/cost allocation between JAXA and the hosting organisation is to be applied. The detail will be described in the agreement to be signed between JAXA and the hosting organisation.
JAXA will:
  • provide a multi-GNSS receiver and antenna.
  • cover transportation cost of equipment from Japan to the hosting site.
  • operate receiver remotely via internet access.
  • set up NTRIP caster to broadcast collected real-time observation data streams.
Hosting organisation will:
  • Install receiver and antenna provided by JAXA at the identified site, including being responsible for the following work;
    building monument (if required),
    construction of cable conduit,
    cabling.
  • provide temperature-controlled room or cabinet, with power and continuous internet access.
  • log raw data in the PC locally as back up data.
  • upload the offline data to a IGS Data Center after converting data to RINEX format according to the IGS guidelines for data transfer.
  • send real-time observation data stream to JAXA’s NTRIP caster server.
  • reboot the receiver is requested by JAXA.
Under special circumstances the construction cost for a new monument and conduit may covered by JAXA. Such a request to JAXA must be made separately, and will be considered during the selection process.

5.Data and Product sharing among participants

  • Observed data is converted to RINEX format for sharing among GNSS community via IGS data center.
  • Real-time data stream is shared among organizations who provide their resources such as receiver, antenna, site, and data server, participating in MGM-Net applying to this call for application, or joining MGA with their own equipment, as well as IGS Multi-GNSS Pilot Project in IGS,
  • Products generated using shared observation data from the network will be provided to participants of MGA for multi-GNSS applications demonstration.

6.Selection Process and Schedule

  • The deadline for applications is the end of August 2011, Application form should be received by JAXA’s POC by e-mail at 24:00 UTC on August 31, 2011.
    The contact address is;

    Mr. Hiroaki Tateshita
    Japan Aerospace Exploration Agency
    Satellite Applications and Promotion Center
    QZSS-AP@jaxa.jp

  • After receiving the application forms, the selection committee established in JAXA will assess each application and make a selection of the 20 sites for the core network, and subsequently the 40 additional ones according to a set of criteria.
  • The following will be considered in the assessment process:
    Experience in GPS tracking station/network operation (See Section 3.2).
    If requirements for hosting site are met (see Section 3.3).
    Any issue with cost allocation for construction of monument and conduit at the site.
    Geometry:
    JAXA will calculate GDOP for QZSS orbit estimation in order to identify sites which have a good geometry.
    Appropriate geographic distribution.
  • Selection process will be finished by the end of November 2011, JAXA will announce selected organizations and sites via web-site as well as send e-mail to them.

7.Terms and Conditions

  • Appendix 2 is the terms and conditions that should be accepted by applicants and JAXA, mutually, which defines purpose of the collaboration, roles of both parties, termination process, and other general matters related to this network establishment.
  • Applicants should apply to this call accepting with the terms and conditions described in “GENERAL CONDITIONS ON THE COOPERATION CONCERNING THE MULTI-GNSS MONITORING NETWORK” in Appendix 2.
  • After selecting hosting sites, JAXA will send acceptance letter to the selected organisation. General conditions are to be effective when JAXA’s acceptance letter is issued .

8.Inquiry

Please make a contact with our POC with regard to the project and the application if you have any inquiries;

Mr. Hiroaki Tateshita
Japan Aerospace Exploration Agency
Satellite Applications and Promotion Center
QZSS-AP@jaxa.jp


9.Participation by Organisations with their own Multi-GNSS Receivers

  • The proposed Multi-GNSS Monitoring Network will be utilised for the Multi-GNSS Demonstration Campaign to provide raw observational data (formats Section 2.1c) and generated products.
  • These data and products will be shared among participating organisations in Multi-GNSS Asia (MGA).
  • Participation in MGA by an organisation which has its own multi-GNSS receiver is welcomed as it can improve the quality of generated products such as orbit and clock offset, as well as increase the robustness of the network.
  • The organisation contributing to the network can access real-time observation data streams.
  • Please contact the MGA secretariat if you wish to contribute to the network with data from your own multi-GNSS receiver.

MGA secretariat
Contact address: secretariat@multignss.asia

●CALL FOR APPLICATIONS: Hosting sites for Multi-GNSS Monitoring Network(PDF:770KB)
●Appendix1 APPLICATION FORM(Word:24KB)
●Appendix2 TERMS AND CONDITIONS(PDF:40KB)

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