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RAPID RECONNAISSANCE AND RESPONSE (R3) T R A C K IN G STAT I O N SYST E M By Wade Birdwell Christopher May Technical documentation to support th

1 INTRODUCTION The R3 satellite project began with eight students attending Georgia Institute of Technology in January 2009. The goal o

2 CHAPTER 1: REQUIREMENTS FLOW-DOWN The requirements for the Tracking Station flow down directly from the mission objectives of R3 through requirem

3 MOS‐6.1!This!plan!shall!include!capability!to!command!protoflight!hard ware!during!test!phase!of!project!MOS‐6!Testing!In!Progress!MOS‐6.2!This!pl

4 TRAC‐2.1!The!Ground!Receiving!antenna!shall!operate!in!the!amateur!S‐band!for! downlink!MOS‐1.1!Analysis!Designed!TRAC‐2.2!The!Ground!Transmitting

5 CHAPTER 2: SUBSYSTEM ARCHITECTURE DESIGN DRIVERS The design drivers for the Tracking Station consisted of knowing that the R3 satelli

6 The figure below is the overall block diagram for the Tracking Station showing the flow of data between components, along with physical conne

7 Design of Downlink Subsystem Key components to the functioning of the downlink subsystem are highlighted in red boxes in the figure below. Explan

8 K ey Components for the Downlink Subsystem RX AN TE NN A The main receive antenna for the tracking station is composed of two key com

9 An accepted determination for the gain of a parabolic type reflector is: 𝐺 =4 ∙ 𝜋 ∙ 𝐴𝑒𝜆2 Where G: is gain, typically represented in d

10 𝐴75%= 0.75 ∙ 𝐴𝑟= 0.75 ∙ 7.296𝑚2≅ 5.472𝑚2 Using these Effective Aperture values, the expected Gain for the Receiving dish in decibels is sh

i R E VISI O NS Revision Description Date Approval ___ Initial Release 4/29/08 ___ PDR Update 7/12/09 ___ Detailed Design Update 12/17/09 ___ CDR

11 The graph below shows the expected best and worst case gain for a 10 foot diameter mesh dish reflector operating in the Amateur radio S-band, whi

12 improved by Russian amateur radio operator Dmitry Dmitriev, RA3AQ. The septum antenna offers the ability to access both left

13 An operating frequency of 2405 MHz is in the Satellite high-rate data segment of the band plan, and is also the middle frequency value for Satell

14 due to lower side lobe rejection is below the nominal level of ambient noise already received by the antenna system, so it does not contribute an

15 Based on the updated and altered spreadsheet, the dimensions for a septum antenna operating at 2405 MHz are shown in the figure below (see Append

16 The septum antenna has two feed elements which are constructed from female N-type four hole flange connectors with a copper probe soldered to

17 The ULNA operates in a frequency range of 2300 to 2450 MHz, which covers the entire portion of the Amateur S-band, and specifically the op

18 TR ANSMISS IO N CAB LES The transmission cables carry the signal received by the RX antenna, through the LNA, to the Icom IC-R9500 re

19 Based on the data provided by Times Microwave Systems, the graph below shows the corrected values for attenuation to include the +15% attenuation

20 Based on being able to reasonably use the Best Fit equation and knowing the operating frequency of the septum antenna is designed for 2405 MHz, i

ii GEORGIA TECH CENTER FOR SPACE SYSTEMS ABSTRACT Tracking Station Subsystem Technical Design Document by Wade Birdwell Principle Investigator: P

21 Design of Uplink Subsystem Key components to the functioning of the uplink subsystem are highlighted in red boxes in the figure below. Explanat

22 TX AN TE NNA The main transmitting antenna for the tracking station is designed to operate in the UHF range, specifically between 432 and 440 MH

23 antenna mounting plate. The main boom arms each have angled L brackets welded to the ends with a vertical hole drilled through them and are moun

24 operator is listening to the rotor motor and gear housing boxes for and sounds of stress or strain. If sounds are heard other than typical motor

25 Figure 18: General diagram of RIGblaster hookup connections for a radio station TR ANSMISS IO N CAB LE The transmission cable between the tran

26 20 years of outdoor service use. As with the transmission cables for the receiver, this cable should be procured through the company Cable X-per

27 Key Components for the Tracking Station Main computer are the Computer and two displays, Local File Storage, NOVA for Windows, and Ham

28 Dual Boot Microsoft Microsoft Windows Vista Ultimate SP1 64-bit for System Builders 1 $179.99 $179.99 GPU Sapphire SAPPHIRE 100260SR Radeon HD 48

29 TLEs for various selected satellites. This is a product developed by amateur radio operators and is available commercially for purchase from www

30 2. Rotor Subsystem and Antenna Support Structure Figure 20: Highlighted Selection of Key Rotor Subsystem and Antenna Support Structure Component

iii TABLE OF CONTENTS TABLE&OF&CONTENTS&... ...

31 These cables require the installation of support drivers on the computer in order to operate properly. The position location of th

32 mechanical capabilities of the structure and rotors. The rotors are robust enough to support the antenna cluster and move it while in breezes, a

33 the Tracking Station to continue operation uninterrupted for several minutes until regular building power returned. It also provides power condi

34 power strip is slotted to provide power to the transceiver and the LNAs; however, it has multiple plugs to offer future expansion for the trackin

35 The figure below shows all the components of the Tracking Station block diagram with the specified part for each component. It is

36 CHAPTER 3: TRAINING PROGRAM FOR THE TRACKING STATION The Ground Station may operate in the receiving mode with no FCC certification,

37 and provides a 10 MHz wide spectrum view. Prior to operating the IC-R9500 is it recommended that the operator read the following chapters in the

38  Fuse replacement Section 13: Control Command  Remote interface information M2 AN TE NN A ROTOR CO NT RO LLER UNIT RC2800PRKX2SU The rot

39  Selecting a Frequency  Transmitting Chapter 6: Menu Setup  Menu A / Menu B  Menu Access  Menu Configuration Chapter 7: Basic Communi

40  General Information  Lithium Battery  Troubleshooting  Operating Notices Chapter 21: Appendix  Built In TNC Command List  COM Conne

iv NOVA!for!Windows!... ...

41 Practice Recommended It is recommended that all selected operators thoroughly practice the use of the equipment prior to any scheduled down li

42 CHAPTER 4: OPERABILITY TRACKING STATION SETUP This section covers the setup of the tracking station for preparation of operation. It covers

43 deluxe.com/HRDv5.aspx and the website should be checked regularly for updates to the software since the current version is a Beta test. Ensure t

44 Once the receiver and transceiver are connected and operating properly, initiate the built in satellite program'under'HRD&

45 longitude'click'on'“Options”'button'and'fill'out the latitude, longitude, and height boxes as shown in the fig

46 CHAPTER 5: INTEGRATION AND TESTING REQUIREMENT VERIFICATION Requirement 1 All communication shall abide by ITU and FCC regulations. Ge

47 Requirement 2. 2 The Ground Transmitting antenna shall operate in the amateur UHF band for uplink. This requirement verification wil

48 passed from the MOC to the Tracking Station Main Computer through the use of remote desktop control of the programs that control the radios and r

49 3. Indirect connection to the computer and software control program software through the use of'Window’s'Remote'Desktop feature. I

50 2. Configure computer software control (Ham Radio Deluxe) and transmit data to a fixed station (Amateur). INCOMPLETE 3. Configure co

v LIST OF FIGURES Figure 1: Block Diagram of Tracking Station Components ... 6!Figure 2: Highlighted

51 INTRAGRATED TESTS End-To-End Te st End to End testing of the Ground Station consists of locally and remotely operating the station for receiving

52 CHAPTER 6: RISK AREAS AND OPEN ITEMS RISK AREAS The largest risk to the operation of the Tracking Station is currently the inability of either HR

53 APPENDIX LIST Appendix A: Amateur Radio Relay League Band Plans for 12 Centimeters and 70 Centimeters The entire ARRL Band Plan is available at

54 2403.0 - 2408.0 Satellite high-rate data 2408.0 - 2410.0 Satellite 2410.0 - 2413.0 FM repeaters (25 kHz) output 2413.0 - 2418.0 High-rate data 24

55 Appendix B: Dimensions for Improved Septum with Dual Mode Horn, by Dmitry Dmitriev, RA3AQ.

56 Appendix C: 2405 MHz Septum Antenna Design Layout.

57 Appendix D: DEM 13ULNA Specifications.

58

59 Appendix E: Brief Specifications for the Icom IC-R9500. Full specifications for the receiver are in the user manual which is available for dow

60 Appendix F: Brief Specifications for the Kenwood TS-2000X. Full specifications for the receiver are in the user manual which is available for

vi LIST OF TABLES Table 1: Requirements Flow Down ... 2!Table

61 Appendix G: Contact Information for various vendors. M2 Antenna Systems, Inc. (Provided rotors, rotor control unit, mesh dish, and cables) http:

62 BIBLIOGRAPHY Barry,'R.'M.;'Bakkes,'P.'J.'“Design'of'a'Distributed'Ground'Support'Syst

vii ACKNOWLEDGMENTS The authors wish to express sincere appreciation to Professor David Spencer (Principle Investigator), for his assi

viii NOMENCLATURE ARRL Amateur Radio Relay League AM Amplitude Modulation AZ or Az Azimuth CW Continuous Wave DEM Down East Microwave EL or El