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Executive Summary
The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides
reliable positioning, navigation, and timing services to civilian users on a continuous worldwide
basisfreely available to all. The United States Air Force (USAF) is the executive agent of GPS
and is directly responsible for acquiring, operating, and sustaining survivable, effective, and
affordable global positioning services for its worldwide customers. The Space and Missile Systems
Center (SMC), Air Force Space Command (AFSPC), is responsible for developing, procuring, and
sustaining GPS satellites, ground systems, and military user equipment.
With the advent of Satellite Base Augmentation Systems (SBAS) and other Radionavigation
Satellite Service (RNSS) systems, managing the issuance and use of GPS pseudorandom noise
(PRN) codes to minimize intra- and inter-system interference has become critical. The GPS PRN
Coordination Office (PRNCO), an entity within the Space and Missile Systems Center (SMC)
located in Los Angeles, CA, is responsible for managing the issuance of GPS PRN codes.
This GPS PRN Code Assignment Process document describes the process for requesting and
assigning the GPS PRN codes pre-selected and defined in GPS interface specifications IS-GPS-
200, IS-GPS-705, and IS-GPS-800. The objectives of this PRN code assignment process are (1)
to establish PRNCO as the single focal point for L1, L2, and L5 GPS PRN code assignments; (2)
to prevent multiple assignments of the same PRN code sets; (3) to assign PRN codes that assure
compatibility and interoperability; and (4) to assign PRN codes in a transparent and equitable
manner.
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Table of Contents
Executive Summary ........................................................................................................................ 2
1. Pseudorandom Noise (PRN) Code Assignment Background ...................................................... 3
2. Process Overview ........................................................................................................................ 4
3. Request for PRN Code Assignment ............................................................................................ 5
4. Review of PRN Code Assignment Application........................................................................... 5
5. Retention of PRN Code Assignment ........................................................................................... 9
6. Modification of PRN Code Assignment .................................................................................... 10
7. GPS PRN Coordination Office Contact Information ................................................................ 10
Appendix A: Application for PRN Code Assignment .................................................................. 11
1. Pseudorandom Noise (PRN) Code Assignment Background
1.1. Intro. Many national and international radionavigation systems seek a high level of
interoperability with GPS, including the use of PRN codes from the spreading code families
developed for GPS. Signals that employ PRN codes from the GPS spreading code families
achieve an established level of code performance, including compatibility and
interoperability with GPS. Additionally, the use of PRN codes from the GPS spreading code
families fosters the development of receivers capable of seamlessly using signals from
multiple radionavigation systems. The resulting compatibility and interoperability are
beneficial to all systems using GPS PRN codes.
1.2. Scope. The procedures established in this document apply to systems other than GPS, for
example Space-Based Augmentation Systems (SBAS), planning to transmit GPS
augmentation signals using one or more of the following PRN codes: L1 Coarse/Acquisition
(C/A)-code, L2 Civil-Moderate (L2 CM)-code, L2 Civil-Long (L2 CL)-code, L5 In-Phase
(L5 I5)-code, L5 Quadrature-Phase (L5 Q5)-code, L1 Civil-Pilot (L1C
P
), and L1 Civil-Data
(L1C
D
) as defined in IS-GPS-200, IS-GPS-705, and IS-GPS-800. While this process is most
commonly used by SBAS providers, this application process should also be followed by
other applicants.
1.3. PRN Definitions. The GPS Pseudorandom Noise spreading codes are defined in IS-GPS-
200, IS-GPS-705, and IS-GPS-800. Baseline sets of PRN codes are reserved exclusively for
use by GPS satellites. Additional sets of PRN codes are defined for use by cooperating
radionavigation systems. A PRN code set consists of a matching quadruplet of distinct PRN
codes for each of the GPS L1, L2, and L5 civil signals defined in the previously listed
interface specifications. See Table 1 for a summary of the various PRN allocations.
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Table 1. PRN Codes and Associated PRN Applications
PRN Code PRN Code Application
L1 C/A
1 – 63
Reserved (GPS)
64 – 119
Other Augmentation Systems
120 – 138*
Satellite-Based Augmentation Systems (SBASs)
139 – 158*
SBASs Expansion/Testing
159 – 210
Other Global Navigation Satellite System (GNSS) Elements
& Applications
L1C
1 – 63
Reserved (GPS)
64 – 119
Other Augmentation Systems
120 – 158*
SBASs
159 – 210
Other GNSS Elements & Applications
L2C
1 – 63
Reserved (GPS)
64 – 119
Unallocated
120 – 158*
SBASs
159 – 210
Other GNSS Elements & Applications
L5
1 – 63
Reserved (GPS)
64 – 119
Unallocated
120 – 158*
SBASs
159 – 210
Other GNSS Element & Applications
* See Section 4.3.7 for SBAS-specific guidance
2. Process Overview
2.1. Overview. A formal request for a PRN code is initiated when an applicant submits the
“Application for PRN Code Set Assignment” to PRNCO (smc.gp.prn@us.af.mil). If the
review criteria in Sections 4.3 and 4.4 are satisfied and PRN codes are available, PRNCO
will issue a PRN code set assignment to the applicant. All four civil signals, i.e. L1-C/A,
L1C, L2C, L5, with the matching PRN code numbers will be assigned at the same time;
unused signals will be held by PRNCO as “reserved” portions of the assignment. The
assignment duration will be based on the needs of the subject system and the criteria
described in Section 4.4. The applicant may renew the assigned PRN code set by resubmitting
an application with any relevant changes.
2.2. Website. Pertinent documentation, to include this process, the lists of assigned and available
PRN code sets, and the “Application for PRN Code Assignment” is located on the GPS PRN
Code Assignment Website at http://www.losangeles.af.mil/About-Us/Fact-
Sheets/Article/343695/pseudorandom-noise-code-assignments.
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3. Request for PRN Code Assignment
3.1. Application Submittal. To request the initial assignment or renewal of one or more PRN
code sets, an applicant must fill out the Application for PRN Code Assignment” form found
on the GPS PRN Code Assignment Website and included in Appendix A of this document.
Once the application is complete, the applicant should email the application to PRNCO per
the instructions described on the application. Thorough completion of the application and
compliance with the instructions will aid PRNCO review.
3.2. Application Content. The purpose of the application is for PRNCO to obtain sufficient
technical and programmatic information about the subject system to review and assign the
appropriate PRN code set and duration. This decision is influenced by both the applicant’s
request and PRNCOs evaluation of the application according to the criteria in Section 4.2.
3.3. Timeline for Submittal. Informal coordination (e.g. email or in-person communication) on
the status of the applicant’s program, intentions for PRN code assignment renewal, or
intentions to apply for a new PRN code set can be conducted at any time. However, formal
application submittal should be accomplished between 1 year and 4 months prior to the
desired PRN assignment notification date (Note: PRN assignment notification date is the
date of issuance, not the date of system broadcast).
4. Review of PRN Code Assignment Application
4.1. Receipt and Clarifying Questions. PRNCO will normally reply within 3 weeks of
application submittal to confirm receipt of the PRN Code Assignment Application. If no
confirmation of receipt is received during that time, PRNCO recommends forwarding the
application to the alternate focal points (See Section 7). After receipt, PRNCO will contact
the applicant to ask clarifying questions to effectively complete the review, if necessary.
4.2. Timeline for Review. PRNCO will review applications as quickly as possible, in the order
they were received. If the application is complete, an adjudication can be expected within 2
months after confirmation of receipt. Applicants should specify the PRN code notification
need date on the application.
4.3. PRN Code Determination. The following factors are used to determine whether or not a
PRN code will be assigned, as well as which PRN code will be assigned to the applicant.
4.3.1. Compatibility and Interference. PRNCO will conduct initial compatibility and
interference screening, to include verifying the transmitter characteristics are in compliance
with International Telecommunication Union (ITU) Radio Regulations, ensuring the PRN
code is not currently in use, and reviewing compliance with any existing GPS operator-to-
operator agreements.
4.3.2. Demonstrated Compliance to Governing Spectrum Authorities. The applicant (i.e. the
organization or government administration either operating the subject system or acting as
the SBAS service provider), is responsible for ensuring the transmitting system complies
with all required radio frequency filings. These may include filings with the ITU, the
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appropriate national spectrum regulatory agency, and other authorities as required. The
specific frequency assignment process, ITU operator-to-operator coordination process, and
radiation approval process are beyond the scope of this document.
In the case of SBASs transmitting from leased payloads, the SBAS service provider may not
necessarily be the organization that submits the radio frequency filings, but the burden is on
the service provider to ensure the appropriate filings are complete, accurate, and approved
before the SBAS transmits with a PRN code.
Assignments will not be processed until proper documentation including, but not limited
to, proof of submitted fillings with both international and national regulatory bodies has
been provided.
4.3.3. Requested PRN code. If the other review criteria in Sections 4.3 and 4.4 are satisfied,
PRNCO will attempt to issue the requested PRN code if it is available. When the requested
PRN code is unavailable, PRNCO will attempt to issue a PRN code within the same range of
PRNs. For example, if PRN 125 is requested but unavailable, PRNCO will attempt to issue
another PRN within the legacy PRN range of 120-138.
4.3.4. Existing PRN Code Assignment. If a specific PRN code is requested by multiple applicants,
and all other review criteria are satisfied, priority will be given to the applicant who already
possesses a PRN code assignment for that specific code (e.g. if an applicant possesses a
Temporary assignment for PRN 137 and decides to apply for renewal of the Temporary
assignment or conversion to a Final assignment for PRN 137).
4.3.5. Quantity of PRN Codes Already Assigned. Due to limited PRN codes and increasing
numbers of systems requiring PRNs, the number of PRNs assigned to an applicant must be
managed to ensure the assignment process is equitable. For SBAS PRNs, PRNCO will issue
no more than 3 PRN code assignments within the range PRN 120-158 to a single SBAS
provider unless there are extenuating circumstances.
4.3.6. Type of PRN code. There are two types of PRN code assignments: Temporary and Final.
4.3.6.1. Final. The maximum duration of a Final PRN code assignment is 10 years. PRN
assignments will be identified as Final if the following two requirements are met:
A) The subject system must be operational. Either the orbital position of the
existing operational satellite or evidence of completed operational testing must
be provided.
B) Evidence of the subject system’s spectrum certification through the ITU and/or
other appropriate regulatory agency must be provided.
4.3.6.2. Temporary. The maximum duration of a Temporary PRN code assignment is 3
years. Temporary assignments will be issued for systems that do not meet the
requirements for a Final assignment. Developmental systems, for example systems
undergoing testing or proof-of-concept demonstration, may be eligible for
Temporary assignments. While final spectrum certifications are not required,
evidence of appropriate spectrum filing submission through the ITU and/or other
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appropriate regulatory agency must be provided. Applicants desiring to upgrade a
Temporary assignment to a Final assignment must submit a new application; the subject
system will be eligible for the full 10 year Final assignment duration, regardless of the
Temporary assigment duration.
4.3.7. SBAS Considerations (PRNs 120-158). If the applicant is requesting PRNs (120-158), for
use by International Civil Aviation Organization (ICAO) International Standards and
Recommended Practices (SARPs)-compliant SBAS, adherence to the following
requirements will influence whether or not a PRN can be issued. The following factors will
be considered for all SBAS PRN code assignments:
4.3.7.1. Users. Assessment of the operational users and geographic area serviced by the
subject system. In the event of limited operational PRNs, the number of operational
users and geographic area may be considered to determine whether a particular PRN
code is assigned.
4.3.7.2. Coordination. The SBAS provider must supply evidence of successful or planned
coordination with other systems transmitting in the same band as the subject
system, that is the 1559-1610 MHz and/or 1164-1300 MHz bands.
4.3.7.3. Program Updates. SBAS service providers are expected at a minimum to
submit information papers to the ICAO Navigation Systems Panel (NSP) that
describe the high-level development, implementation, and operational timeline of
their SBAS system. Specific milestones should clearly indicate the expected date
when PRNs are required for development and testing as well as the expected PRN
need date for operational use of RTCA DO-229 Minimum Operational
Performance Standards (MOPS) compliant SBAS avionics. The applicant must
provide a copy of these information papers to PRNCO to establish credible intent
to make use of the PRN code assignment.
4.3.7.4. Legacy PRN Considerations (PRNs 120-138). Due to the proliferation of SBASs
designed for safety-of-life aviation use in accordance with Annex 10 Volume 1 of
the Convention on International Civil Aviation, the original allocation of SBAS
PRNs (120-138) does not meet the demand of current and planned systems. While
PRN code numbers 139-158 are currently allocated for SBAS use, updates to all
civil aviation standards and guidance (e.g. ICAO SARPs, RTCA/EUROCAE
MOPS, etc.) were not effective until May 2017. Therefore, aircraft equipped with
the full 120-158 range are not expected to appear in great numbers for some time.
The following will be considered for issuance of a legacy PRN:
A) The Civil Aviation Authority (CAA) is expected to submit a Letter of
Confirmation to both the ICAO NSP and PRNCO certifying that the SBAS
provider’s service will be in compliance with the ICAO SARPs. The Letter
of Confirmation should also state the expected date of initial SBAS
operational use.
Note: The requesting or endorsing CAA may reside in a different state from
where the SBAS provider is licensed in accordance with respective national
regulations.
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B) Preference will be given to subject systems that have met the requirements for
a Final PRN code assignment, as described in Section 4.3.6.1.
In order to support the future expansion of internationally harmonized SBAS PRN
codes, PRNCO strongly recommends use of PRNs 139-158 by applicants with
subject systems that fall under the criteria for Temporary assignments, i.e.
research, development and testing applications.
4.4. Duration of PRN Code Assignment
4.4.1. Maximum Duration. The maximum duration of the PRN code assignment depends on the
type of PRN code assignment. If it is Temporary, the maximum duration is 3 years. If it is
Final, the maximum duration is 10 years. An applicant desiring to extend a PRN code
assignment beyond the maximum duration must renew their assignment by submitting
another application, incorporating any pertinent changes.
4.4.2. Assigned Duration. The assigned duration will depend on two factors:
4.4.2.1. Requested Duration. PRNCO will attempt to accommodate the requested
duration if it aligns with the submitted program timeline.
4.4.2.2. Program Schedule. The applicant is required to submit a program schedule that
includes the high level development, implementation, and operation timeline,
including when the PRN codes will be required. Plans to decommission the system
or field a new system, or any other change expected that would affect the
operational status of the system must be included. The alignment of the program
schedule with the requested duration will be considered in the determination of
assignment duration.
4.5. Issuance of PRN Code Assignment. If the review criteria are satisfied, PRNCO will issue
a PRN code assignment letter to the applicant.
4.5.1. Issuance of PRN Code Set. When PRNCO issues a PRN code, the entire PRN code set
with matching codes for the L1 C/A, L1C, L2C, and L5 signals will be assigned to the
applicant at the same time. Any of the four civil signals not requested by the applicant will
be held by PRNCO as “reserved.”
4.5.2. Assignee. The applicant or requesting agency will be the recipient of the PRN code
assignment. The desired addressee for the assignment letter should be included in the
Application for PRN Code Assignment. In the case of SBASs transmitting from leased
payloads, PRN codes are assigned to the government administration acting as the SBAS
service provider, not to the owner of the satellite that hosts the leased payload.
4.5.3. Published Update. PRNCO will publish updates to the L1 C/A, L1C, L2C, and/or L5 PRN
Code Assignment Tables on the GPS PRN Website at http://www.losangeles.af.mil/About-
Us/Fact-Sheets/Article/343695/pseudorandom-noise-code-assignments.
4.5.4. Disclaimer. Issuance of a PRN code does not indicate the PRNCO, Space and Missile
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Systems Center (SMC), or United States Air Force endorses or approves of the subject
system’s operations. A PRN code assignment does not convey the authority to radiate in
the L1, L2, or L5 frequency bands. SMC assumes no responsibility for ensuring subject
systems comply with domestic or international radio frequency regulations or ensuring
subject systems do not cause RF interference. The applicant and appropriate national and/or
international regulatory bodies are responsible for the operation of the subject system in
accordance with all applicable rules and regulations.
4.5.5. Expiration. The PRN code assignment will expire the last day of the last month of the
effective assignment. For example, if the PRN code assignment is effective thru April 2023,
it will expire on 30 Apr 2023.
5. Retention of PRN Code Assignment
In order to retain the issued PRN code assignment, the applicant must adhere to the following
requirements:
5.1. Program Update. Applicants must notify PRNCO when the program timeline (as described
in Section 4.4.2.2) or planned PRN code requirements have changed with respect to the
original application package.
5.2. Filing Status Update. Applicants must notify PRNCO when the status of spectrum filings
to pertinent domestic/international spectrum authorities has changed.
5.3. SBAS Specific Requirements
5.3.1. Maintaining Operations. For SBAS PRN code assignments designated as Final, the
subject system cannot lapse in operation for more than 2 consecutive years during the
assigned duration. In order to meet this requirement, providers have the option of transfering
the PRN (Section 6.3) to another existing operational system or a newly fielded system.
Other options should be discussed and coordinated with PRNCO.
5.3.2. ICAO NSP Updates. Applicants must continue to update NSP as described in Section
4.3.7.3.
5.3.3. Compliance to Civil Aviation Standards. Subject systems must remain compliant with
civil aviation standards and guidance, including but not limited to ICAO SARPs.
5.3.4. Non-safety-of-life SBAS. If the SBAS is not approved for safety-of-life services, the
SBAS provider must implement protective measures to ensure transmissions are not
erroneously used for safety-of-life services. This includes, but is not limited to, transmitting
messages of Type 0.
5.3.5. Issue or Anomaly Reporting. In the event that an issue or anomaly is identified with an
SBAS system, the SBAS provider should be notified directly. PRNCO should be included
on the correspondence. The SBAS provider contact sheet and process for anomaly reporting
are located on the ICAO NSP portal.
5.3.6. Impact to Safety-of-life Services. The SBAS provider must cease transmission (Section
6.4) of the assigned PRN if it is determined by any ICAO or RTCA/EUROCAE member
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that the systems transmissions impact SBAS safety of life services. Also see Section 6.1
on suspension and revocation.
6. Modification of PRN Code Assignment
6.1. SMC/GP PRN Transfer. PRNCO reserves the right to transfer PRNs, that is assign a
different PRN code than the original, while it is still active. In the case of a transfer, PRNCO
will notify all affected parties and work with them to coordinate the logistics of the
reassignment.
6.2. Revocation or Suspension. PRNCO reserves the right to revoke or suspend any active PRN
code assignment if: (1) The subject system is found to not be in compliance with
international or national regulations, standards, or guidance, (2) the subject system does not
meet the criteria for its assigned PRN code as discussed in Section 5, e.g. system ceases to
be operational, or (3) the applicant is not using its PRN code assignment. PRNCO will
attempt to discuss any issues with the applicant before revoking or suspending the PRN code
assignment.
6.3. Advanced Notice Requirement. PRNCO will not make any modifications to SBAS PRN
code assignments that impact an SBAS service provider's obligation to "provide ICAO with
six years notice in advance of planned system termination" without first discussing this
decision at a meeting of the ICAO NSP.
6.4. Assignee PRN Transfer. Assignees may transfer PRN code number assignments between
satellites within their systems as long as the service providers give PRNCO at least one
month advance notice. For example, an SBAS service provider may transfer one of its two
PRN code assignments to a third satellite while one of the primary satellites is undergoing
maintenance (information in Part 2 of the PRN Code Assignment Application must provided
for the third satellite).
6.5. Cease of Transmissions. When a subject system ceases to transmit the assigned PRN due
to an expiration, transfer, revocation, or suspension, the provider must email PRNCO to
announce that the system has ceased transmission.
7. GPS PRN Coordination Office Contact Information
Below is the primary contact for GPS PRNs:
PRNCO Org Box: smc.gp.prn@us.af.mil
All applications and questions, or concerns about GPS PRN codes should be submitted to the
PRNCO Org Box. The following alternate contacts should be used as contingency, including
for time sensitive requests:
Jeffrey Auerbach: AuerbachJM@state.gov
Karl Kovach: karl.l.kovach@aero.org
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Appendix A: Application for PRN Code Assignment
To initiate the PRN code assignment process, an applicant must (1) fill out the “Application for
PRN Code Assignment” located on the GPS PRN Website (http://www.losangeles.af.mil/About-
Us/Fact-Sheets/Article/343695/pseudorandom-noise-code-assignments) and (2) email the
completed application to PRNCO at smc.gp.prn@us.af.mil.
Below is the latest application (Version 3.1) completed with sample text. Note: The electronic
version should be used for submissions.
APPLICATION FOR PRN CODE ASSIGNMENT
Part 1
INSTRUCTIONS
Complete application and submit via email to smc.gp.prn@us.af.mil. Attach supporting documentation to the email. The GPS PRN
Coordination Office will confirm receipt of application within 3 weeks. If no response is received, use the alternate contact
information in the PRN Code Assignment Process. Completeness of application information will expedite the review process.
Alternate Address: GPS PRN Coordination Office, PNT Mission Integration, 483 North Aviation Blvd, El Segundo, CA 90245-4659, USA
3. MIDDLE NAME
5. ORGANIZATION
7. FAX
8. E-MAIL(S)
APPLICANT INFORMATION
1. FIRST NAME
4. TITLE
6. TELEPHONE
ATTN
Street
City, State, Zip Code
Country
9b. ASSIGNMENT LETTER RECIPIENT ADDRESS
ATTN
Street
City, State, Zip Code
Country
SYSTEM INFORMATION
10. SYSTEM NAME
12. SPONSORING GOVERNMENT
13. ORGANIZATION/DEPARTMENT
11. SBAS Provider ID (or N/A)
14. ITU (or regulatory agency)
FILING DATE (actual/anticipated)
PRN CODE REQUEST INFORMATION
Please fill out the following info for each PRN code set requested.
15. DATE OF APPLICATION
16a.
Requested
PRN Code
16b.
Signals
16c.
Satellite Name
16d.
GLAN
(degrees)
*if GEO
16e.
Notification
Need Date
16f.
Test Broadcast Dates
16g.
Operational Service
Broadcast Dates
16h.
Requested
Expiration
Start End Start End
17. JUSTIFICATION FOR REQUEST. Please explain here or attach supplemental information to support the PRN request, if applicable.
18. USERS. Please explain who the users of this service will be (geographical region and/or consituents).
19. OTHER COMMENTS/SPECIAL REQUESTS
GEO Geosynchronous
GLAN Geographic Longitude of the Ascending Node
ITU International Telecommunications Union
PRN Pseudorandom Noise
SBAS Satellite Based Augmentation System
CONTINUE TO NEXT PAGE (PART 2). COMPLETE PART 2 FOR EACH BROADCASTING SATELLITE.
Version 3.1
9a. APPLICANT ADDRESS
120
L1, L5
Satellite 4F2
50 W
Apr 2019
Mar 2019
Apr 2019
Apr 2019
May 2019
May 2019
139-158
L1, L5
Satellite 4F3
50 E
Apr 2019
Mar 2019
Apr 2019
N/A
N/A
Apr 2019
John
Smith
H
Director of Navigation
Civil Aviation Administration
+1-000-000-000
email@org.edu
Example Augmentation System
96
United States of America
Applicant Address, Org
123 Street
City, State, 22000
USA
Civil Aviation Administration
14 Jan 2019
20 Feb 2019
PRN 120 needed for operational broadcast. Need PRN assignment no later than Apr 2019 for planning purposes. An additional PRN is requested in the range 139-158 for
testing. See attached documents for program timeline and regulatory body certifications.
The operational Satellite 4F2 will provide safety-of-life SBAS service to aircraft in Northern Africa beginning in 2020.
PRN 120 was assigned 10 years ago in Apr 2009. We are requesting to renew PRN 120 and use it for a different satellite.
Assignment Letter Recipient, Org
123 Street
City, State, 22000
USA
APPLICATION FOR PRN CODE ASSIGNMENT
Part 2
INSTRUCTIONS
Complete this page for each broadcasting satellite. Ensure to designate broadcasted PRN Code(s) in 17a for identification.
SATELLITE ORBIT PARAMETERS
Please fill out the following info for each satellite
20a. PRN Code(s) Broadcasted
20b. GLAN (degrees) *GEO only* 20c. SEMI-MAJOR AXIS, SMA (meters)
20d. RAAN (degrees) 20e. INCLINATION, i (degrees)
20f. ARGUMENT OF PERIGEE (degrees) 20g. ECCENTRICITY, e
20h. MEAN ANOMALY (degrees) 20i. UTC TIME OF EPOCH
RECEIVED ISOTROPIC POWER (RIP)
21. MAXIMUM RIP ON SURFACE OF EARTH (dBW)
21a. L1 C/A
21b. L1 Cp
21c. L1 Cd
21d. L2 CL
21e. L2 CM
21f. L5 I5
21g. L5 Q5
22. RIP ON SURFACE OF EARTH AS A FUNCTION OF ELEVATION
Please provide RIP for each applicable signal in dBW
Elevation
(degrees)
-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
L1 C/A
L1 Cp
L1 Cd
L2 CL
L2 CM
L5 I5
L5 Q5
23. RIP REMARKS
ADDITIONAL INFORMATION FOR TEST SATELLITES
24a. POWER LEVELS AND MODE OF OPERATIONS
Effective Isotropic Radiated Power, dBW
24b. TRANSMIT ANTENNA GAIN PATTERN
25. PULSED MODE
25a. PULSE DUTY CYCLE 25b. PULSE REPITITION RATE
26. INTERFERENCE ANALYSIS
Describe measures taken to avoid interference and details of interference analysis done
GEO Geosynchronous
GLAN Geographic Longitude of the Ascending Node
PRN Pseudorandom Noise
RAAN Right Ascension of the Ascending Node
SBAS Satellite Based Augmentation System
UTC Universal Coordinate Time
Version 3.1
N/A
Remarks
120
20 000 890
0.1
0.0
MMDDYY HH:MM:SS
50 W
270
0.0
220
-150.4
N/A
N/A
N/A
N/A
-150.2
N/A
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
N/A
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
-150.4
Explanation of power levels (dBW) and mode of operations
Details on antenna gain pattern
Explanation of measures taken