HSAT Experiment Narrative v3

0016-EX-CN-2016 Text Documents

Harris Corporation

2016-12-01ELS_185034

                                   HSAT-1
Exhibit 1: Experiment Description Document for FCC
                                           Application
                            Stephen T. Gillespie, P.E.
                                       Harris Corporation



                                                Revision B

                                           05 August 2016

                                Revised 01 December 2016




       NON-EXPORT CONTROLLED INFORMATION


                                                       TABLE OF CONTENTS




1.0     INTRODUCTION .............................................................................................................................. 3
2.0     TECHNICAL DETAILS ........................................................................................................................ 4

    2.1 PHYSICAL DESCRIPTION AND EXPERIMENT .................................................................................................. 4
    2.2 RADIO FREQUENCY SPECTRUM UTILIZED .................................................................................................... 5
       2.2.1  Requested Emitter Frequency Allocations .............................................................................. 6
    2.3 ANTENNA DETAILS ................................................................................................................................ 6
       2.3.1  Space Segment Emitting Antennas ......................................................................................... 6
       2.3.2  Space Segment Receive-Only Antennas .................................................................................. 9
       2.3.3  HSAT-1 Ground Terminal Antenna ........................................................................................ 13
    2.4 HARRIS “STOP BUZZER” CONTACT.......................................................................................................... 14



                                                             Table of Figures
Figure 2-1: HSAT-1 Physical Description ......................................................................................................... 4
Figure 2-2: Globalstar GAT-17PP Tx Antenna Pattern ................................................................................... 6
Figure 2-3: Globalstar GAT-17PP Rx Antenna Pattern .................................................................................... 7
Figure 2-4: Globalstar GAT-17PP Antenna .................................................................................................... 7
Figure 2-5: Measured S-band Patch Azimuth Pattern .................................................................................... 8
Figure 2-6: Measured S-band Patch Elevation Pattern ................................................................................... 9
Figure 2-7: AIS Monopole Antenna Directivity ............................................................................................. 10
Figure 2-8: BBDA Directivity, 159.0125 MHz ............................................................................................... 11
Figure 2-9: BBDA Directivity, 195 MHz ........................................................................................................ 11
Figure 2-10: BBDA Directivity, 397.5 MHz ................................................................................................... 12
Figure 2-11: BBDA Directivity, 1260 MHz .................................................................................................... 12
Figure 2-12: Predicted HSAT-1 Ground Terminal Antenna Pattern (not including radome loss) ................ 13
Figure 2-13: HSAT-1 Ground Terminal Location & Facility Details............................................................... 14



                                                              Table of Tables
Table 2-1: HSAT-1 Technical Description ....................................................................................................... 4
Table 2-2: Radio Frequency Spectrum Summary for HSAT-1 ........................................................................ 15




                                   NON-EXPORT CONTROLLED INFORMATION
                                                                                                                          Page 2 of 15
                                                                                                             Revision B (01 Dec 2016)


1.0       Introduction
Harris Corporation is requesting a 24 month experimental license from the Federal
Communication Commission’s (FCC) Office of Engineering and Technology (OET) in
order to complete the objectives of the HSAT-1 mission. The HSAT-1 cubesat is an
orbital experimental testbed being developed by Harris Corporation for launch in Q2
2017. The following objectives of the HSAT-1 orbital experiment will improve the radio
state-of-the-art:
      •       Assess the effectiveness of radiation mitigation techniques of the payload
                  in the actual environment with continual performance and event
                  monitoring
      •       Assess the performance of a broad-bandwidth deployable antenna (BBDA)
                  specifically designed for cubesats through on-orbit measurement
      •       Assess the effective coverage of Harris’ earth-to-space and space-to-earth
                  Tracking, Telemetry, and Control (TT&C) and payload experiment
                  data communications through on-orbit demonstration of an S-band
                  radio
In order to assess payload performance in a radiation environment, the HSAT-1 orbital
testbed must continually receive and process, which requires a signal-rich environment.
Initially, HSAT-1 will receive and process maritime Automatic Identification System (AIS)
signals using a TRL-9 commercially available cubesat antenna, hereafter referred to as
the “AIS monopole antenna”. TT&C and payload experiment data communications will
be performed during the first phase through the Globalstar constellation & network.
Approximately 60 days after launch, HSAT-1 will disable the AIS monopole antenna and
deploy a broad-bandwidth deployable antenna (hereafter referred to as the “BBDA”).
This begins the second phase of the payload experiment. The payload will receive VHF
broadcast signals in addition to AIS signals to determine the low band performance.
Solar noise will also be received to determine performance of the BBDA’s mid and upper
band. During this time, TT&C and payload experiment data communications through the
S-band radio to a Harris ground terminal will be demonstrated. Since the BBDA
receives in a much wider bandwidth, a higher data rate modem than the Globalstar is
required to transmit the payload experiment data to satisfactorily characterize the
performance of the antenna. The S-band radio meets this need with a higher data rate
downlink capability.
Specific frequency bands requested are listed in Section 2.2. Usage of the requested
RF spectrum for this flight experiment is critical to the success of the flight experiment.
The requested RF communications implementation provides both the ability to
successfully command the spacecraft and the ability to receive critical engineering
telemetry and experiment data. Harris Corporation is requesting a 24 month
experimental license from the Federal Communication Commission’s (FCC) Office of
Engineering and Technology (OET) in order to complete the objectives of the HSAT-1
mission.
Harris Corporation will be the sole owner and operator of the HSAT-1 satellite.



                     NON-EXPORT CONTROLLED INFORMATION
                                                                               Page 3 of 15
                                                                  Revision B (01 Dec 2016)


2.0    Technical Details

2.1    Physical Description and Experiment
The HSAT-1 orbital testbed is a 6U cubesat with two deployable solar array panels and
two deployable antennas as depicted in Figure 2-1. Harris Corporation has signed a
Launch Services Agreement (LSA) with Spaceflight, Inc, to launch HSAT-1 on an Indian
Polar Satellite Launch Vehicle (PSLV) in May 2017 through the Indian Space Research
Organization (ISRO) at the SHAR (Sriharikota) Spaceport (Satish Dhawan Space
Center). The satellite will fly in a sun-synchronous orbit at 500 km altitude, 97.4°
inclination, and 9:30 AM Local Time Descending Node (LTDN). Table 2-1 details other
technical parameters of HSAT-1.




                      Figure 2-1: HSAT-1 Physical Description



                     Table 2-1: HSAT-1 Technical Description
                  Parameter                  Value / Description
                 Mission Life                 2 years minimum
                     Mass                         < 13.2 kg
                     Size                            6U
                  Propulsion                        None
               Attitude Control         Reaction wheels & torque rods
                   Batteries          Nine 2.8 amp-hour lithium ion cells
              Primary TT&C Link              Globalstar Network
             Redundant TT&C Link                S-band Radio



                   NON-EXPORT CONTROLLED INFORMATION
                                                                          Page 4 of 15
                                                             Revision B (01 Dec 2016)


HSAT-1 will be launched in a powered off state within its dispenser. Upon orbital
insertion, HSAT-1 will be ejected from its dispenser and begin a power-on and boot
sequence followed by orientation into a sun-safe mode (solar panels oriented towards
sun). No radio communications will occur for a minimum of 30 minutes after ejection
from the launch dispenser. After the radio blackout period has ended, the satellite will
transmit state-of-health telemetry to Harris through the Globalstar constellation and
network using Globalstar’s GSP-1720 modem. Once the data has been reviewed,
Harris will command the satellite to deploy the AIS monopole antenna. This antenna is
manufactured by Innovative Solutions in Space and is fully qualified with flight history
(TRL-9). The AIS monopole antenna is fed to a Harris-manufactured AIS receiver,
which has qualification-by-similarity history. Once deployed, Harris will upload specific
mission decks that will command the payload to begin receiving and processing AIS
signals. Telemetry will be recorded indicating specific payload performance as well as
any radiation-induced events. During this time the telemetry and corresponding mission
data will be communicated to the Harris Satellite Operations Center (HSOC) through the
Globalstar network.
After the primary payload objectives have been demonstrated (up to 2 months after
launch), Harris will command the satellite to deploy the BBDA. Once deployed, Harris
will review the deployment telemetry and then switch the payload receiver from the AIS
monopole antenna to the BBDA. Payload processing will continue as before, but now
utilizing four separate bands over the BBDA range instead of one. This presents the
opportunity to continue to monitor payload performance and radiation effects over
mission life while utilizing several discrete regions across the BBDA to evaluate specific
antenna performance
Testing will conclude 24 months after launch, at which time the spacecraft will be
passivated and decommissioned. Deorbit will occur naturally through atmospheric drag.
Based on an analysis utilizing NASA’s DAS 2.0.2 software with specific HSAT-1 inputs
(mass, size, form, initial orbit, material types, etc), HSAT-1 is anticipated to remain in
orbit less than 4.3 years total. In addition, the HSAT-1 design passed all other
requirements of debris and deorbit in accordance with NPR 8715.6A, which addresses
breakups and other debris-producing events. Reference Exhibit 2 Document 7052742
for the complete Orbital Debris and Deorbit Assessment.

2.2    Radio Frequency Spectrum Utilized
Table 2-2 summarizes the requested radio frequency spectrum for the HSAT-1 satellite.
These bands were selected for various reasons:
               1) Reducing cost through high reuse and utilization of existing designs
                  (the hardware has been previously designed for these frequencies
                  and some long lead components were already available in inventory);
               2) Four separate bands spaced over the BBDA design band is
                  necessary for evaluating antenna performance;
These bands already contain an abundance of continuous signals such as AIS and VHF
broadcasting which allow the payload to continually receive and process in order to
monitor and detect radiation events.

                     NON-EXPORT CONTROLLED INFORMATION
                                                                             Page 5 of 15
                                                                Revision B (01 Dec 2016)


2.2.1 Requested Emitter Frequency Allocations
Harris Corporation specifically requests to utilize the following allocations for the HSAT-1
satellite system:
         Two emitters on the HSAT-1 mobile satellite
             o Globalstar: Space-to-space (1610-1626.5 MHz)
             o Downlink: Space-to-earth (2180-2185 MHz)
         One ground terminal owned by Harris Corporation
             o Uplink: Earth-to-space (2005-2006.25 MHz)
Harris Corporation requests the above specific frequency allocations to meet the current
ground terminal design capabilities, there is flexibility to modify the request to nearby
bands in case of coordination issues with other users.

2.3       Antenna Details

2.3.1 Space Segment Emitting Antennas

2.3.1.1 Globalstar Patch Antenna
HSAT-1 initial and primary TT&C and payload experiment communications link is
through the Globalstar GAT-17PP patch antenna in conjunction with the Globalstar
GSP-1720 modem aboard the satellite. The transmit element provides +4.5 dBic gain
within the operating frequency band of 1610-1626.5 MHz. The receive element provides
+0.2 dBic gain at 2483.5-2500.0 MHz. Figure 2-2 details the radiating pattern of the
patch antenna for transmit, and Figure 2-3 details the pattern for receive.




                 Figure 2-2: Globalstar GAT-17PP Tx Antenna Pattern




                     NON-EXPORT CONTROLLED INFORMATION
                                                                              Page 6 of 15
                                                                 Revision B (01 Dec 2016)


               Figure 2-3: Globalstar GAT-17PP Rx Antenna Pattern




                    Figure 2-4: Globalstar GAT-17PP Antenna

2.3.1.2 S-band Passive Patch Antenna
HSAT-1 secondary TT&C and payload experiment communications link is through a
custom passive patch antenna in conjunction with a Tethers Unlimited S-band radio
aboard the satellite. This patch antenna will transmit signals containing TT&C and
payload experiment data to the Harris Ground Terminal at 2180-2185 MHz. Figure 2-6
details the radiating pattern of the antenna at the center of the requested band.




                   NON-EXPORT CONTROLLED INFORMATION
                                                                        Page 7 of 15
                                                           Revision B (01 Dec 2016)


Figure 2-5: Measured S-band Patch Azimuth Pattern




   NON-EXPORT CONTROLLED INFORMATION
                                                     Page 8 of 15
                                        Revision B (01 Dec 2016)


               Figure 2-6: Measured S-band Patch Elevation Pattern



2.3.2 Space Segment Receive-Only Antennas

2.3.2.1 S-band Receive Patch Antenna
HSAT-1 will utilize a custom passive patch antenna in conjunction with a Tethers
Unlimited S-band radio aboard the satellite. This antenna is separate from the patch
antenna described in Section 2.3.1.2, and will receive TT&C signals from the Harris
Ground Terminal at 2005-2006.25 MHz. The patch antenna receive pattern is identical
to the radiating pattern depicted in Figure 2-6.

2.3.2.2 Payload AIS Monopole Antenna
HSAT-1 will utilize a deployable monopole whip antenna manufactured by Innovative
Solutions in Space to receive AIS signals as part of the payload experiment. The
antenna will receive AIS signals between 159.0125-161.025 MHz. Figure 2-7 details the
pattern of the antenna at 159.0125 MHz.




                   NON-EXPORT CONTROLLED INFORMATION
                                                                          Page 9 of 15
                                                             Revision B (01 Dec 2016)


                   Figure 2-7: AIS Monopole Antenna Directivity

2.3.2.3 Payload Broad Bandwidth Deployable Antenna (BBDA)
HSAT-1 will utilize a custom broad bandwidth deployable antenna (BBDA) manufactured
by Harris Corporation which will receive various AIS, broadcasting, and noise from
159.0125-1260.0 MHz as a part of the payload experiment. Figure 2-8, Figure 2-10, and
Figure 2-11 detail the pattern of the BBDA at 159.0125 MHz, 195 MHz, 397.5 MHz, and
1260.0 MHz respectively. Specific frequency bands of the receiver are outlined in Table
2-2. Successful demonstration of this antenna technology will improve the state of the
art for cubesat wideband deployable antennas.




                    NON-EXPORT CONTROLLED INFORMATION
                                                                        Page 10 of 15
                                                             Revision B (01 Dec 2016)


Figure 2-8: BBDA Directivity, 159.0125 MHz




  Figure 2-9: BBDA Directivity, 195 MHz



NON-EXPORT CONTROLLED INFORMATION
                                                Page 11 of 15
                                     Revision B (01 Dec 2016)


 Figure 2-10: BBDA Directivity, 397.5 MHz




 Figure 2-11: BBDA Directivity, 1260 MHz


NON-EXPORT CONTROLLED INFORMATION
                                                Page 12 of 15
                                     Revision B (01 Dec 2016)


2.3.3 HSAT-1 Ground Terminal Antenna
HSAT-1’s secondary TT&C communications uplink (the Globalstar Radio being the
primary) will utilize a 4.2 meter parabolic dish antenna located at 28.026552, -80.604989
(Lat, Lon NAD83) on a rootop antenna test platform of a Harris Corporation facility in
Palm Bay FL to send TT&C to the HSAT-1 spacecraft. The location and elevation of the
proposed ground terminal is shown in Figure 2-13. This antenna will provide 35.1 dBic
transmit gain (including radome loss) within the operating frequency band of 2005-
2006.25 MHz, with 2.5° half-power beamwidth. Figure 2-12 details the radiating pattern
of the antenna. No other ground stations will communicate directly with HSAT-1.
This antenna will also receive TT&C and payload experiment data transmitted by the
satellite at 2180-2185 MHz.




 Figure 2-12: Predicted HSAT-1 Ground Terminal Antenna Pattern (not including
                                radome loss)




                    NON-EXPORT CONTROLLED INFORMATION
                                                                          Page 13 of 15
                                                               Revision B (01 Dec 2016)


        Figure 2-13: HSAT-1 Ground Terminal Location & Facility Details



2.4   Harris “Stop Buzzer” Contact
Thomas Low, Ground Segment Architect
tlow03@harris.com
Harris Corporation SIS, Palm Bay FL
321-729-2899




                 NON-EXPORT CONTROLLED INFORMATION
                                                                   Page 14 of 15
                                                        Revision B (01 Dec 2016)


                                             Table 2-2: Radio Frequency Spectrum Summary for HSAT-1
                                                                Modem /                                       Active Band
  Type       Location         Function        Description                      Antenna Type         ERP (W)               Polarization Modulation Waveform & Coding
                                                                Receiver                                         (MHz)
               HSAT-1
                            Comm Downlink     Globalstar
               Satellite                                        GSP-1720      GAT-17PP Patch          0.76    1610-1626.5     LHCP     QPSK/CDMA       Reference Globalstar
                            Default/Primary Space-to-space
             (Mobile Sat)
                                                                                                                                                   Rolloff factor 0.25, Reed-
               HSAT-1                                            Tethers
                            Comm Downlink    S-Band                                                                                                    Solomon 255/239
Emitters       Satellite
                              Secondary   Space-to-Earth
                                                                Unlimited       Passive Patch         5.72     2180-2185      LHCP         8PSK
                                                                                                                                                            7-7/8 CC
             (Mobile Sat)                                       Swift-SLX
                                                                                                                                                    5 MHz Occupied BW
                                                                                                                                                   Rolloff factor 0.25, 7-1/2
            Melbourne, FL Harris Ground        S-Band
                                                                  Harris      Parabolic Reflector    312.01   2005-2006.25    RHCP     Offset QPSK             CC
               (Fixed)    Terminal (Uplink) Earth-to-space
                                                                                                                                                   1.25 MHz Occupied BW
               HSAT-1
                                                    L1         NovAtel
               Satellite         GPS                                            Passive Patch                   1575.42       RHCP         GPS L1 waveform, C/A coding
                                              Space-to-Space OEM615 GPS
             (Mobile Sat)
               HSAT-1
                             Comm Uplink      Globalstar
               Satellite                                        GSP-1720      GAT-17PP Patch                  2483.5-2500     LHCP     QPSK/CDMA          Ref Globalstar
                            Default/Primary Space-to-Space
             (Mobile Sat)
               HSAT-1                                            Tethers                                                                             Rolloff factor 0.25, 7-1/2
                             Comm Uplink         S-Band
               Satellite                                        Unlimited       Passive Patch                 2005-2006.25    RHCP     Offset QPSK   CC; 1.25 MHz Occupied
                              Secondary       Earth-to-Space
             (Mobile Sat)                                       Swift-SLX                                                                                        BW
                             Harris Ground                                                                                                           Rolloff factor 0.25, Reed-
Receivers   Melbourne, FL                        S-Band                        4.2m Parabolic         NA
                               Terminal                           Harris                                       2180-2185      LHCP        8PSK       Solomon 255/239, 7-7/8
               (Fixed)                        Space-to-Earth                      Reflector
                              (Downlink)                                                                                                             CC; 5 MHz Occupied BW
               HSAT-1
                                                AIS signal                      AIS Monopole
               Satellite    AIS "Channel A"                                                                   155.98-162.10   Linear               AIS waveform
                                                 receiver                          Antenna
             (Mobile Sat)
                                                                Harris Corp
                                                               PN 3266638-       Broad Band
                                                                                                              155.98-162.10
               HSAT-1                                              101           Deployable
                                                VHF/UHF/L-                                                       174-216
               Satellite    UHF "Channel B"                                       Antenna                                     Linear      AIS, VHF Broadcast, Solar noise
                                               band receiver                                                     385-410
             (Mobile Sat)                                                        Harris Corp
                                                                                                                1220-1300
                                                                                3266643-101




                                                      NON-EXPORT CONTROLLED INFORMATION
                                                                                                                                                       Page 15 of 15
                                                                                                                                            Revision B (01 Dec 2016)



Document Created: 2016-12-01 12:58:29
Document Modified: 2016-12-01 12:58:29

© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC