Attachment Anik_F3_Ka_Technical SAT-PPL-20110630-00123

Attachment Anik_F3_Ka_Technical

This document pretains to SAT-PPL-20110630-00123 for Permitted List on a Satellite Space Stations filing.

IBFS_SATPPL2011063000123_917559

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Technical Exhibit for Anik F3 Satellite at 118.7° West Longitude
Orbital Location in Ka band
This document is an attachment to the application of Telesat with regard to Anik F3
satellite at 118.7° west longitude (WL) geostationary orbital location in Ka band. The
technical information for the proposed system as required by paragraph (d) of Section
§25.1141 of the FCC rules and regulation is provided in this document. The information
specified in paragraph (c) of that section has been provided in the Schedule S and is not
repeated in this document.

The authorization for the operation of Anik F3 at 118.7° WL in C, Ku, and Ka band
frequencies has been granted by the Canadian administration (Industry Canada). The
satellite has been brought into use and is currently operating at 118.7° WL. The
corresponding ITU process has been completed as well. This application is submitted to
the FCC in order to seek authorization to provide services in the United States by Anik
F3 in Ka band (The FCC has already granted the authorization to Telesat to provide
services in the United States in C band and Ku band by Anik F3 via a previous
application).2

§25.114(d)(1): General description of the overall system
The Anik F3 satellite, operating at 118.7° WL, will provide a range of Ka-band fixed
satellite services (FSS). There are two Ka-band antennas on the satellite, one providing a
spot beam and one providing a wide beam. The Ka-band payload on this satellite consists
of two transponders for bi-directional communication between gateway and user. The
operating frequencies of the Ka-band payload are 29.4-29.9 GHz in the uplink direction
and 19.7-20.2 GHz in the downlink direction. The transponders can operate with the wide
beam antenna carrying a wideband channel of 500 MHz bandwidth or a narrowband
channel of 75 MHz. The transponders can also operate with the spot beam antenna
carrying a narrowband channel of 75 MHz. The transmissions use circular polarization,
right-hand and left-hand. Therefore, the satellite exploits frequency reuse by using
orthogonal polarizations.

The satellite TT&C operations are performed from the Telesat Operation Center in
Ottawa, Canada via the TT&C antenna located at Allan Park at the following address3:

Telesat
Allan Park Earth Station, 133438 Allan Park Road
West Grey Township, Allan Park, Ontario
Canada N4N 3B8
Tel: 519-371-7490

1
47 C.F.R. §25.114
2
File number SAT-PPL-20060516-00061.
3
The TT&C for the satellite are performed in Ku band and the corresponding characteristics have been
provided in the FCC application for Anik F3 in C and Ku band (File number SAT-PPL-20060516-00061).

Page 1 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Satellite transmission on each active channel (TWTA chain) can be individually turned
on and off by ground Tele-command signals, enabling cessation of emissions from the
satellite, as required by §25.2074 of the Commission’s rules. For each of the
transponders, the saturation flux density (SFD) can be changed by ground command in 1
dB steps over a range of 30 dB.

§25.114(d)(3): Space station antenna gain contours
The space station antenna gain contours for all the beams have been provided in .gxt
format (For quick reference, the co-polar satellite antenna gain contours have been
provided in Annex 1 as well). The gain values of the contours in those .gxt files are
relative to the peak gain. The peak gain values and polarization information for each of
the beams is shown in Table 1.

Table 1: List of the satellite beams and their peak values
Beam Uplink/ Co-pol Antenna Cross-pol Antenna Polarization
Downlink Peak Gain [dBi] Peak Gain [dBi]
STXL Downlink 43.52 10.26 LHC5
WTXL Downlink 33.40 0.86 LHC
WTXR Downlink 33.40 0.86 RHC6
SRXL Uplink 46.27 11.53 LHC
SRXR Uplink 46.27 11.53 RHC
WRXL Uplink 34.41 1.30 LHC
WRXR Uplink 34.41 1.30 RHC

As mentioned earlier, the Ka band payload consists of two transponders which are
switchable between the spot beam and the wide beam antennas. Table 2 summarizes the
possible transponders configurations along with the corresponding bandwidth and
frequency information.

Table 2: Transponders configurations
Configuration
Number

Uplink Downlink
Transponder Center Center
(Forward/ Bandwidth Uplink Frequency Uplink Downlink Frequency Downlink
Return) [MHz] Beam [MHz] Polarization Beam [MHz] Polarization
Forward 75 SRXR 29550 RHC STXL 19850 LHC
1
Return 75 SRXL 29550 LHC WTXR 19850 RHC
Forward 75 WRXL 29550 LHC WTXR 19850 RHC
2
Return 75 WRXR 29550 RHC WTXL 19850 LHC
Forward 500 WRXL 29650 LHC WTXR 19950 RHC
3
Return 500 WRXR 29650 RHC WTXL 19950 LHC

4
47 C.F.R. §25.207
5
Left Hand Circular
6
Right Hand Circular

Page 2 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

§25.114(d)(4): Description of the types of services to be provided, areas served,
transmission characteristics, performance objectives, link noise budget, typical
earth station parameters, and modulation parameters
The Anik F3 satellite will provide a range of Ka-band fixed satellite services (FSS) such
as internet services, distant learning, and emergency services.

Typical modulation and emission schemes along with their characteristics, including the
performance objectives, are listed in Table 3.

Table 3: Typical modulation/emission schemes and the corresponding performance objectives
Digital Total C/N
Modulation Emission Assigned Information Rate Objective
ID Modulation Designator BW [kHz] [kbps] FEC Rate [dB]
1 8PSK 75M0G7W 75000 120000 0.667 7.92
2 QPSK 37M5G7W 37500 30000 0.5 1.8
3 QPSK 2M00G7W 2000 1600 0.5 1.8
4 QPSK 37M5G7W 37500 15000 0.25 -1.55

For the gateway earth station, large antennas, e.g., 8 meters, will be used. The user
terminals will have earth station antennas of 0.66 to 1.0 meter in diameter, depending on
the geographical location of the user terminal. All the earth stations will use uplink
power control (UPC). The earth station antennas will meet the antenna performance
requirements specified in §25.2097 of the Commission’s rules. For all the earth stations,
the uplink transmit power will comply with the requirements of §25.2048 and the uplink
equivalent isotropic radiated power (EIRP) will meet the requirements of §25.138.9

Typical link budgets and overall performance analysis, including the analysis of the
effects of each contributing noise and interference source, are provided in Tables 4 to 6.
In these link budgets, it has been assumed that the gateway is located in Buffalo, NY.
Table 4 shows the typical link budgets when the forward and return transponders are
configured as in “Configuration Number 1” of Table 2 (see Table 2). Similarly, Table 5
and Table 6 show typical link budgets when the transponders have “Configuration
Number 2” and “Configuration Number 3” of Table 2, respectively.

7
47 C.F.R. §25.209
8
47 C.F.R. §25.204
9
47 C.F.R. §25.138

Page 3 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

§25.114(d)(5): Power flux density compliance
In this section the maximum power flux density (PFD) levels at the earth’s surface are
presented and it is demonstrated that the PFD levels produced by Anik F3 in the band
19.7-20.2 GHz comply with the power flux density (PFD) limit of §25.138.10 According
to §25.138(a)(6), in the band 19.7-20.2 GHz “PFD at the Earth’s surface produced by
emissions from a space station for all conditions, including clear sky, and for all methods
of modulation shall not exceed a level of -118 dBW/m2/MHz”. It is worth noting that in
§25.20811 no PFD limit has been specified for the downlink Ka frequency band of Anik
F3 (19.7-20.2 GHz).

Table 7 shows the peak EIRP values over 1 MHz bandwidth as well as the peak PFD
values at the earth’s surface for all possible transponders configurations. From this table
it can be seen that the maximum PFD at the earth’s surface is equal to -119.6
dB(W/m2/MHz), which is smaller than the PFD limit of -118 dB(W/m2/MHz), as set by
§25.138(a)(6).

Table 7: Downlink PFD values for different transponders configurations
Distance
between
the
satellite
Peak and the
EIRP peak gain PFD at the
Transponders Transponder over 1 Location of the point on peak gain point
configuration (Forward/ Downlink MHz BW peak antenna the earth on the earth
2
Number Return) beam [dBW] gain (long/lat) [km] [dB(W/m /MHz]
Forward STXL 43.27 74.33W / 45.45N 39346.9 -119.6
1
Return WTXR 33.15 122.21W / 47.53N 38147.2 -129.5
Forward WTXR 33.15 122.21W / 47.53N 38147.2 -129.5
2
Return WTXL 33.15 122.21W / 47.53N 38147.2 -129.5
Forward WTXR 28.38 122.21W / 47.53N 38147.2 -134.2
3
Return WTXL 24.91 122.21W / 47.53N 38147.2 -137.7

§25.114(d)(6): Public interest considerations in support of grant
The Anik F3 satellite will offer capacity in Ka band that would enable consumers to use
services such as broadband internet. Such services are in demand especially in remote
areas where high-speed internet services may not be available through other media. In
addition, the Ka band capacity offered by Anik F3 will provide more options to the
consumers which in turn would result in more competitive rates and services.

10
47 C.F.R. §25.138
11
47 C.F.R. §25.208

Page 7 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

§25.114(d)(7): Information specified in §25.140(b) (Interference analysis and the
compatibility of the proposed system two degrees from any authorized space
station)
In this section the information specified in §25.140(b)12 are presented (as required by
§25.114(d)(7)).

§25.140(b)(1) asks for presenting the information specified in §25.114 which is
accomplished by the Schedule S and other sections of this Technical Exhibit.
§25.140(b)(2) asks for demonstration of the compatibility of the proposed space system
two degrees from any authorized space stations. This demonstration is provided in this
section.

Currently, there is neither any authorized nor any proposed geostationary satellite within
two degrees of Anik F3 (118.7° WL) in the Ka band frequencies of Anik F3 (19.7-20.2
GHz and 29.4-29.9 GHz). In the following, the compatibility of the Anik F3 satellite
network with potential future satellites two degrees away from Anik F3 is demonstrated.
Since there are currently no such satellites, it is assumed that those future satellites would
have downlink EIRP and uplink power levels similar to those of the Anik F3 satellite
network. An analysis was performed to calculate the adjacent satellite interference (ASI).
In this analysis, earth station (ES) antenna diameters of 0.66m, 1m, and 8m were
considered for the Anik F3 satelllite network, and the adjacent satellites were assumed to
be at 118.7±2° WL and 118.7±4° WL. The results are summarized in Table 8 and Table
9. The uplink carrier to interference ratios (C/I) due to aggregate ASI for different earth
station antenna sizes are summarized in Table 8 and the downlink C/I values due to
aggregate ASI for different antenna sizes are shown in Table 9. The details of ASI
calculations have been presented in Annex 2.

The ASI values presented in Table 8 and Table 9 have been used in the link budget
calculations of Table 4, Table 5, and Table 6. From Tables 4, 5, and 6 it can be seen that
the required carrier to noise plus interference ratios C/(N+I) are met. This confirms that
the Anik F3 satellite network can perform efficiently if there are future satellites two
degrees away from it. Similarly, if there are future satellites at two degrees away from
Anik F3, and considering similar parameters for those satellites to Anik F3 satellite
network, it can be concluded that the ASI from Anik F3 into those future satellites will be
within their tolerance.

Table 8: Uplink Aggregate ASI from adjacent satellites at ±2 and ±4 degrees away
ES Antenna Diameter [m] Uplink C/I due to ASI [dB]
0.66 19.7
1 23.3
8 41.4

12
47 C.F.R. §25.140(b)

Page 8 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Table 9: Downlink Aggregate ASI from adjacent satellites at ±2 and ±4 degrees away
ES Antenna Diameter [m] Downlink C/I due to ASI [dB]
0.66 16.2
1 19.9
8 37.9

§25.114(d)(14): Description of the design and operational strategies that are used to
mitigate orbital debris

§25.114(d)(14)(i), Debris Release Assessment. Telesat has assessed the normal
operations and post-mission disposal procedure and has determined that no debris will be
released by the spacecraft. The Anik F3 satellite has been at the geostationary orbital
location of 118.7° WL since April 2007 without any debris issue.

To protect from small body collisions, the spacecraft hardware of Anik F3 has been
designed so that individual faults will not cause the loss of the entire spacecraft. All
critical components (e.g. computers and control devices) have been built within the
structure and shielded from external influences. Items that could not be built within the
spacecraft nor shielded (e.g. antennas) are able to withstand impact. The spacecraft can
be controlled through both the normal payload antennas and wide angle antennas. The
likelihood of both being damaged during a small body collision is minimal. The wide
angle antennas on this spacecraft are basically open waveguides that point towards the
earth (there is one set on each side of the spacecraft and either set could be used to
successfully de-orbit the spacecraft). These wide angle antennas would continue to
operate even if struck and bent.

§25.114(d)(14)(ii), Accidental Explosion Assessment. Telesat has reviewed failure
modes for all equipment to assess the possibility of an accidental explosion onboard the
spacecraft. In order to ensure that the spacecraft does not explode on orbit, Telesat takes
specific precautions. All batteries and fuel tanks are monitored for pressure or
temperature variations. Alarms in the Satellite Control Center (“SCC”) inform controllers
of any variations. Additionally, long-term trending analysis is performed to monitor for
any unexpected trends.

The batteries are operated utilizing the manufacturer’s automatic recharging scheme.
Doing so ensures that charging terminates normally without building up additional heat
and pressure. As this process occurs wholly within the spacecraft, it also affords
protection from command link failures (on the ground).

Page 9 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

is obtained. Any remaining propellant will be consumed by further raising the orbit until
combustion is no longer possible. The remaining species of propellant, either Oxidizer
(N204) or Fuel (MMH), will be vented, placing the propulsion system on the spacecraft
in “safe” mode.

Propellant tracking is accomplished using a bookkeeping method as per industry
standard. Using this method, the ground control station tracks the number of jet seconds
utilized for station keeping, momentum control and other attitude control events. The
amount of fuel used is determined from the number of jet seconds. This process has been
calibrated using data collected from thruster tests conducted on the ground and has been
found to be accurate to within a few months of life on the spacecraft.

Propellant Gauging System tests can be performed throughout the operational life. This
test uses heaters and heat transfer curves to determine the actual fuel still aboard the
spacecraft. As the amount of fuel in the tanks decreases, the accuracy of the test results
increases. Therefore, operationally, the PGS tests will be performed as the satellite
approaches its end of propellant life in order to verify bookkeeping results.

Page 11 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Annex 1
Satellite antenna gain contours

The co-polar satellite antenna gain contours are shown in Figures 1 to 7. As mentioned
earlier, the co-polar and cross-polar gain contours have been provided in .gxt format as
attachments to the Schedule S. The co-polar contours are provided here for quick
reference. The peak gain values and polarization information for the beams have been
provided in Table 1.

Figure 1: Co-polar gain contours for beam SRXL

-15.00
-4.00 0.00
-10.00
-20.00 -2.00
-8.00 -6.00

Page 12 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 2: Co-polar gain contours for beam SRXR

-15.00
-4.00 0.00
-10.00
-20.00 -2.00
-8.00 -6.00

Page 13 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 3: Co-polar gain contours for beam STXL

-20.00

-10.00

-15.00
-2.00
0.00

-8.00
-4.00
-6.00

Page 14 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 4: Co-polar gain contours for beam WRXL

-10.00
-10.00

-8.00
-6.00

-4.00
-2.00
0.00
-2.00
-6.00

-15.00
-20.00

Page 15 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 5: Co-polar gain contours for beam WRXR

-10.00
-10.00

-8.00
-6.00

-4.00
-2.00
0.00
-2.00
-6.00

-15.00
-20.00

Page 16 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 6: Co-polar gain contours for beam WTXL

-8.00

-4.00

-2.00

-10.00 0.00

-15.00 -6.00
-8.00

-20.00

Page 17 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Figure 7: Co-polar gain contours for beam WTXR

-8.00

-2.00

0.00

-4.00 -6.00
-10.00

-8.00 -15.00
-20.00

Page 18 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Annex 2
Details of the methodology for the calculation of C/I due to
adjacent satellite interference

In this annex, the details of the methodology for the calculation of the carrier to
interference ratio (C/I) due to adjacent satellite interference (ASI) are presented and it is
shown how the uplink and downlink C/I values of Table 8 and Table 9 have been
computed.

As mentioned earlier, there is currently no authorized or proposed geostationary satellite
within two degrees of Anik F3 in the Ka band frequencies of Anik F3. In the analysis
below the C/I which would be caused by potential future satellites two degrees away
from Anik F3 is calculated. It is assumed that those future satellites would have
downlink EIRP and uplink power levels similar to those of the Anik F3 satellite network.

In the following, an antenna diameter of 0.66m has been considered for the earth station
of the Anik F3 satellite network, and uplink and downlink C/I due to ASI from adjacent
satellites at ±2° and ±4° away from Anik F3 are calculated. The same procedure has been
used for the calculation of ASI for other earth station antenna sizes (i.e., 1m and 8m).

Table 10 shows the calculation details of the uplink C/I due to ASI from an adjacent
satellite 2° away from Anik F3. Table 11 shows the calculation details of the uplink C/I
due to ASI from an adjacent satellite 4° away from Anik F3. Table 12 shows the
calculation of the aggregate uplink ASI from adjacent satellites at ±2° and ±4° away from
Anik F3.

The calculation details for downlink C/I due to ASI from an adjacent satellite 2° away
from Anik F3 is shown in Table 13. The calculation details for downlink C/I due to ASI
from an adjacent satellite 4° away from Anik F3 is shown in Table 14. The calculation of
the aggregate downlink ASI from adjacent satellites at ±2° and ±4° away from Anik F3 is
shown in Table 15.

Page 19 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Table 10: Calculation of the uplink C/I for an earth station antenna size of 0.66m due to ASI from an
adjacent satellite network 2° away
Anik F3 Orbital Location Deg WL 118.7
Adjacent Satellite Location at 2 degrees away Deg WL 120.7
Station Keeping Tolerance Deg 0.05
Minimum Geocentric Effective Separation Deg 1.9
Topocentric Separation (θ) Deg 2.09

Uplink ASI C/I Calculation
Frequency GHz 29.65
Anik F3 TX Earth Station
Antenna Diameter m 0.66
Antenna Gain dBi 44.4
Adjacent Satellite Network TX Earth Station
Antenna Off-axis gain toward Anik F3 (29-25log(θ)) dBi 21.0
C/I (Uplink ASI) dB 23.4

Table 11: Calculation of the uplink C/I for an earth station antenna size of 0.66m due to ASI from an
adjacent satellite network 4° away
Anik F3 Orbital Location Deg WL 118.7
Adjacent Satellite Location at 4 degrees away Deg WL 122.7
Station Keeping Tolerance Deg 0.05
Minimum Geocentric Effective Separation Deg 3.9
Topocentric Separation (θ) Deg 4.29

Uplink ASI C/I Calculation
Frequency GHz 29.65
Anik F3 TX Earth Station
Antenna Diameter m 0.66
Antenna Gain dBi 44.4
Adjacent Satellite Network TX Earth Station
Antenna Off-axis gain toward Anik F3 (29-25log(θ)) dBi 13.2
C/I (Uplink ASI) dB 31.2

Table 12: Aggregate uplink ASI from adjacent satellites at +/- 2 and +/- 4 degrees away
Uplink C/I due to ASI from the adjacent satellite +2 degrees away dB 23.4
Uplink C/I due to ASI from the adjacent satellite -2 degrees away dB 23.4
Uplink C/I due to ASI from the adjacent satellite +4 degrees away dB 31.2
Uplink C/I due to ASI from the adjacent satellite -4 degrees away dB 31.2
Aggregate Uplink C/I due to ASI dB 19.7

Page 20 of 22 Telesat

Technical Exhibit (Attachment to the FCC Form 312)
Anik F3 in Ka band (FSS satellite at 118.7W)

Table 13: Calculation of the downlink C/I for an earth station antenna size of 0.66m due to ASI from
an adjacent satellite network 2° away
Anik F3 Orbital Location Deg WL 118.7
Adjacent Satellite Location at 2 degrees away Deg WL 120.7
Station Keeping Tolerance Deg 0.05
Minimum Geocentric Effective Separation Deg 1.9
Topocentric Separation (θ) Deg 2.09

Downlink ASI C/I Calculation
Frequency GHz 19.95
Anik F3 RX Earth Station
Antenna Diameter m 0.66
Antenna Gain dBi 40.9
Antenna Off-axis gain toward Adjacent Sastellite (29-25log(θ)) dBi 21.0
C/I (Downlink ASI) dB 19.9

Table 14: Calculation of the downlink C/I for an earth station antenna size of 0.66m due to ASI from
an adjacent satellite network 4° away
Anik F3 Orbital Location Deg WL 118.7
Adjacent Satellite Location at 4 degrees away Deg WL 122.7
Station Keeping Tolerance Deg 0.05
Minimum Geocentric Effective Separation Deg 3.9
Topocentric Separation (θ) Deg 4.29

Downlink ASI C/I Calculation
Frequency GHz 19.95
Anik F3 RX Earth Station
Antenna Diameter m 0.66
Antenna Gain dBi 40.9
Antenna Off-axis gain toward Adjacent Sastellite (29-25log(θ)) dBi 13.2
C/I (Downlink ASI) dB 27.7

Table 15: Aggregate downlink ASI from adjacent satellites at +/- 2 and +/- 4 degrees away
Downlink C/I due to ASI from the adjacent satellite +2 degrees away dB 19.9
Downlink C/I due to ASI from the adjacent satellite -2 degrees away dB 19.9
Downlink C/I due to ASI from the adjacent satellite +4 degrees away dB 27.7
Downlink C/I due to ASI from the adjacent satellite -4 degrees away dB 27.7
Aggregate Downlink C/I due to ASI dB 16.2

Page 21 of 22 Telesat

Document Created: 2011-08-16 16:48:53
Document Modified: 2011-08-16 16:48:53

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