SN User's Guide - ESC Home - NASA

More documents

Recommendations

Info

Table D-4. Minimum Bandwidth as Defined for NTIA OOB Emission Mask Operating Frequency Range (fc) Minimum Bandwidth (BL) 470 MHz < fc < 1 GHz 25 kHz 1 GHz < fc < 10 GHz 100 kHz 10 GHz < fc < 15 GHz 300 kHz 15 GHz < fc < 26 GHz 500 kHz fc > 26 GHz 1 MHz For Carrier Frequencies above 15 GHz, a 1 MHz bandwidth may be used. Attenuation in this sense refers to the reduction in level relative to the reference, 0 dBsd, unless otherwise specified. The NTIA “unwanted emission mask rolls off at 40 dB per decade to a maximum attenuation of 60 dBsd, at which point it continues on both sides of the carrier for all frequencies beyond this point. For any narrowband or single frequency unwanted emission which is not spread by the modulation process, the required attenuation shall be at least 60 dBc, where dBc is attenuation below the mean transmit power, rather than the dBsd value determined above.” In practice, NTIA evaluates spectral emissions by plotting a line intersecting the measured 3 dB, 20 dB, 40 dB, and 60 dB attenuation points (provided by the project) on the log scale PSD plots. The plotted line is then compared with the NTIA mask for compliance. Missions that do not meet this standard fall subject to Section 5.1.2 of the NTIA Manual. This section states, “In any instance of harmful interference caused by nonconformance with the provisions of this chapter, the responsibility for eliminating the harmful interference normally shall rest with the agency operating in nonconformance.” The NTIA mask applies for all unwanted emissions; the NTIA does not define separate regions for out-of-band emissions and spurious emissions. D.4.2 NTIA Emissions Mask Example This section presents an example of a test of conformance with the NTIA emissions mask, using an ideal unfiltered and a filtered 1.0 Mbps BPSK signal. In Figure D-5, the spectra are plotted versus percentage of necessary bandwidth (%). The -3, -20, -40, and -60 dB points of the Filtered BPSK spectral emissions are shown in Table D-5. Revision 10 D-14 450-<strong>SN</strong>UG
Table D-5. Spectrum Points of Filtered BPSK Signal From Figure D-5, it can be seen that the Filtered BPSK spectral emissions meet the requirements of the NTIA mask over the applicable frequency range. However, the unfiltered BPSK exceeds the mask by a significant amount. dBsd (dB relative to max PSD within the necessary bandwidth) . 0 -10 -20 -30 -40 -50 -60 -70 Necessary BW (MHz) Emission BW (dB) 2.00 Two-sided BW (MHz) One-sided BW (MHz) Freq Offset (one-sided BW) as % of Necessary BW 3.0 0.70 0.35 17.5 20.0 3.00 1.50 75 40.0 10.00 5.00 250 60.0 20.00 10.00 500 Unfiltered BPSK Filtered BPSK (-3, -20, -40, and -60 dB points) NTIA Emissions Mask 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 Frequency Offset as a Percentage of Necessary BW (%) Figure D-5. Example of Unfiltered and Filtered BPSK PSDs and NTIA Mask Revision 10 D-15 450-<strong>SN</strong>UG
Page 1 and 2:
452 / Space Network Project 450-SNU
Page 3 and 4:
Space Network Users’ Guide (SNUG)
Page 5 and 6:
Preface The Space Network Users’
Page 7 and 8:
Change Information Page List of Eff
Page 9 and 10:
Table of Contents Section 1. Introd
Page 11 and 12:
6.2.5 Real-Time Configuration Chang
Page 13 and 14:
Appendix B. Functional Configuratio
Page 15 and 16:
Appendix J. Customer Constraints fo
Page 17 and 18:
Figure 10-5. NCCDS/NEST Scheduling
Page 19 and 20:
Figure B-6. Customer Platform Funct
Page 21 and 22:
NASA Standard Transponder .........
Page 23 and 24:
Table B-3. Data Configuration Const
Page 25 and 26:
1.1 Purpose and Scope Section 1. In
Page 27 and 28:
Section/ Appendix Table 1-1. Docume
Page 29 and 30:
S SN Future Services Describes futu
Page 31 and 32:
Many of the links require access to
Page 33 and 34:
Revision 10 1-9 450-SNUG https://co
Page 35 and 36:
Section 2. SN Overview 2.1 General
Page 37 and 38:
Revision 10 2-3 450-SNUG Customer P
Page 39 and 40:
Multiple Access Antenna • 30 elem
Page 41 and 42:
Table 2-1. Example of TDRS Constell
Page 43 and 44:
services. The detailed TDRS spacecr
Page 45 and 46:
Average Coverage (%) 100 95 90 85 8
Page 47 and 48:
quality. For further information on
Page 49 and 50:
3.1 General Section 3. Services Ava
Page 51 and 52:
Revision 10 3-3 450-SNUG MA (note 1
Page 53 and 54:
Table 3-2 provides an overview of t
Page 55 and 56:
Revision 10 3-7 450-SNUG TDRS G/T (
Page 57 and 58:
Data Group and Mode (note 4) Table
Page 59 and 60:
platforms to have SA support on one
Page 61 and 62:
a TDRS. Compatibility testing is pe
Page 63 and 64:
NASA-unique 4800 bit block and then
Page 65 and 66:
Revision 10 3-17 450-SNUG Table 3-4
Page 67 and 68:
Page 69 and 70:
the Space Network's ability to supp
Page 71 and 72:
4.1 Overview Section 4. Obtaining S
Page 73 and 74:
5.1 General Section 5. MA Telecommu
Page 75 and 76:
an appropriate forward service has
Page 77 and 78:
Table 5-1. TDRSS MA Forward PSK Ser
Page 79 and 80:
NOTE: Customers who operate in a SS
Page 81 and 82:
Table 5-3. Salient Characteristics
Page 83 and 84:
e. The customer platform receiving
Page 85 and 86:
DG1 (note 1) Table 5-6. TDRSS MA Re
Page 87 and 88:
Table 5-6. TDRSS MA Return Service
Page 89 and 90:
Page 91 and 92:
platform transmit frequency for non
Page 93 and 94:
configurations, the I-Q channel amb
Page 95 and 96:
Page 97 and 98:
Acquisition (note 3) (cont’d): Ta
Page 99 and 100:
d. After symbol/decoder and symbol/
Page 101 and 102:
Section 3, paragraph 3.5 for guidel
Page 103 and 104:
5.3.3.4 Reacquisition While in the
Page 105 and 106:
5.3.5 Acquisition Scenarios The fol
Page 107 and 108:
d. DG2 Mode Transitions. 1. DG2 non
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
6.1 General Section 6. SSA Telecomm
Page 117 and 118:
6.2.2 PSK Signal Parameters The TDR
Page 119 and 120:
Table 6-1. TDRSS SSA Forward PSK Se
Page 121 and 122:
6.2.2.2 BPSK Signal Parameters a. B
Page 123 and 124:
unless the customer is utilizing th
Page 125 and 126:
Table 6-2. TDRSS SSA Forward Phase
Page 127 and 128:
Table 6-3. TDRSS SSA Forward Servic
Page 129 and 130:
Page 131 and 132:
d. The customer platform receiving
Page 133 and 134:
DG1 (note 1) Table 6-7. TDRSS SSA R
Page 135 and 136:
Table 6-7. TDRSS SSA Return Service
Page 137 and 138:
6.3.2.2 DG1 Signal Parameters DG1 s
Page 139 and 140:
Page 141 and 142:
and signal characteristics specifie
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
3. Balanced Power Single Data Sourc
Page 149 and 150:
and an ephemeris uncertainty as def
Page 151 and 152:
Table 6-11. SSA Return Service Real
Page 153 and 154:
2. DG1 Mode 1 (or 3) to DG1 Mode 2
Page 155 and 156:
Table 6-12. TDRSS SSA Return Servic
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
service is supported through TDRS F
Page 163 and 164:
Table 6-14. TDRS SSAR IF Service Sp
Page 165 and 166:
7.1 General Section 7. KuSA Telecom
Page 167 and 168:
c. Frequency Sweep on the Forward L
Page 169 and 170:
Table 7-1. TDRSS KuSA Forward Servi
Page 171 and 172:
Page 173 and 174:
7.2.5 Acquisition Scenarios The fol
Page 175 and 176:
Page 177 and 178:
Table 7-4. KuSA Forward Service Rea
Page 179 and 180:
Table 7-5. TDRSS KuSA Return Servic
Page 181 and 182:
. SQPSK Modulation. SQPSK modulatio
Page 183 and 184:
7.3.2.3 DG2 Signal Parameters DG2 s
Page 185 and 186:
Revision 10 7-21 450-SNUG Dual Data
Page 187 and 188:
code and carrier acquisition will b
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
identical data) having unbalanced I
Page 197 and 198:
acquisition, the process should tra
Page 199 and 200:
Table 7-8. KuSA Return Service Real
Page 201 and 202:
egins) or by its customer platform
Page 203 and 204:
Reconfiguration and reacquisition b
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
7.3.6 225 MHz IF Service This secti
Page 211 and 212:
Table 7-11. TDRS KuSAR IF Service S
Page 213 and 214:
7.3.6.3 Potential Signal Performanc
Page 215 and 216:
Page 217 and 218:
8.1 General Section 8. KaSA Telecom
Page 219 and 220:
8.2 KaSA Forward Services 8.2.1 Gen
Page 221 and 222:
Table 8-1. TDRSS KaSA Forward Servi
Page 223 and 224:
c. Asynchronous Data Modulation. Fo
Page 225 and 226:
Table 8-2. TDRSS KaSA Forward Servi
Page 227 and 228:
Page 229 and 230:
in Table 8-1. The EIRP directed tow
Page 231 and 232:
Table 8-5. TDRSS KaSA Return 225 MH
Page 233 and 234:
Single Data Source Dual Data Source
Page 235 and 236:
Page 237 and 238:
Revision 10 8-21 450-SNUG Acquisiti
Page 239 and 240:
Page 241 and 242:
8.3.3.2 Bit Error Rate (BER) Table
Page 243 and 244:
d. Loss of Autotrack. Loss of autot
Page 245 and 246:
Table 8-8. KaSA Return Service Real
Page 247 and 248:
noncoherent transmissions are desir
Page 249 and 250:
Table 8-9. TDRSS KaSA Return 225 MH
Page 251 and 252:
Changes to the operating conditions
Page 253 and 254:
Table 8-11. TDRS KaSAR 225 MHz and
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Section 9. Tracking and Clock Calib
Page 261 and 262:
(sample-to-sample) range data as in
Page 263 and 264:
NOTE: The definition of 240. MHz is
Page 265 and 266:
time" refers to that portion (leadi
Page 267 and 268:
e. TDRSS Delay Compensation. The WS
Page 269 and 270:
Section 10. SN Operations for TDRSS
Page 271 and 272:
Table 10-2. Overview of SN Message
Page 273 and 274:
10.2.2.6 Schedule Distribution List
Page 275 and 276:
Table 10-3. Schedule Request Descri
Page 277 and 278:
Revision 10 10-9 450-SNUG Applicabl
Page 279 and 280:
10.2.3.4 Forecast Scheduling Genera
Page 281 and 282:
which have been committed to the SN
Page 283 and 284:
10.2.4.2 Specific Schedule Request
Page 285 and 286:
e. Each SSC represents a single ser
Page 287 and 288:
NOTE: TUT reports are not transmitt
Page 289 and 290:
Scheduling Data (SHO) Operations Me
Page 291 and 292:
10.2.7.2 NISN Event Schedule (NES)
Page 293 and 294:
System Element Table 10-7. Real-tim
Page 295 and 296:
System Element Table 10-9. Real-tim
Page 297 and 298:
System Element Table 10-10. Real-ti
Page 299 and 300:
System Element Table 10-10. Real-ti
Page 301 and 302:
Revision 10 10-33 450-SNUG Message
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
10.4 Customer Platform Emergency Op
Page 317 and 318:
operations. During a customer platf
Page 319 and 320:
Appendix A. Example Link Calculatio
Page 321 and 322:
A.3.2 Forward service link calculat
Page 323 and 324:
User Spacecraft G/T (dB/K) 20 10 0
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
. Required Eb /No is 9.9 dB (BER of
Page 331 and 332:
Ideal Required Prec (dBWi) -150 -16
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Appendix B. Functional Configuratio
Page 369 and 370:
Customer MOC SN Data Interface WDIS
Page 371 and 372:
Revision 10 B-5 450-SNUG SN Ground
Page 373 and 374:
Revision 10 B-7 450-SNUG SN Ground
Page 375 and 376: The SN return services are divided
Page 377 and 378: Revision 10 B-11 450-SNUG From chan
Page 379 and 380: Revision 10 B-13 450-SNUG From sing
Page 381 and 382: Revision 10 B-15 450-SNUG NRZ Only
Page 383 and 384: Revision 10 B-17 450-SNUG Table B-3
Page 385 and 386: The signal is transmitted using unb
Page 387 and 388: Table B-5. Data Configuration Const
Page 389 and 390: Table B-7. Data Configuration Const
Page 391 and 392: Appendix C. Operational Aspects of
Page 393 and 394: service PN codes (command and range
Page 395 and 396: Revision 10 C-5 450-SNUG Table C-1.
Page 401 and 402: Revision 10 C-11 450-SNUG Table C-3
Page 403 and 404: Revision 10 C-13 450-SNUG Table C-3
Page 405 and 406: C.4 Reacquisition C.4.1 Introductio
Page 407 and 408: Table C-4. Parameters Which Impact
Page 409 and 410: Customer MOC/NCCDS changes operatin
Page 411 and 412: . Initial acquisition not achieved
Page 413 and 414: Appendix D. Spectrum Considerations
Page 415 and 416: For most Space Network users, the a
Page 417 and 418: PFD (α) = maximum power flux densi
Page 419 and 420: Equation D-5: sin 4 ( x) P T , / 2
Page 421 and 422: For signals with two channels, the
Page 423 and 424: PFD (dBW/m^2/4kHz) -142 -144 -146 -
Page 425: Figure D-4. NTIA Out-of-Band (OOB)
Page 429 and 430: criteria for deep space operations
Page 431 and 432: PSD (dBW/Hz) -170 -180 -190 -200 -2
Page 433 and 434: potential interference to other sys
Page 435 and 436: Annex to Appendix D D.A.1 Special C
Page 437 and 438: Table D.A-1. Peak Power Calculation
Page 439 and 440: Appendix E. Customer Platform and T
Page 441 and 442: 1. Jitter = None (Coded or Uncoded
Page 443 and 444: Figure E-8. QPSK Phase Imbalance id
Page 445 and 446: R max R ideal Figure E-11. Residual
Page 447 and 448: For forward service: O/ OUT AM / PM
Page 449 and 450: E.16 Out-of-Band Emissions Out-of-b
Page 451 and 452: E.21 PN Chip Rate PN code chip rate
Page 453 and 454: Appendix F. Periodic Convolutional
Page 455 and 456: Revision 10 F-3 450-SNUG ENCODER SY
Page 457 and 458: Appendix G. Predicted Performance D
Page 459 and 460: G.3.3 If the RFI environment become
Page 461 and 462: G.6 SSA and MA Forward Service RFI
Page 463 and 464: Appendix H. Demand Access System (D
Page 465 and 466: H.1.4 DAS Service Modes There are t
Page 467 and 468: DAS provides service through each s
Page 469 and 470: modulation format. Acquisition by D
Page 471 and 472: H.1.5.3 Transmission Delays The ove
Page 473 and 474: Receiving service request responses
Page 475 and 476: Revision 10 H-13 450-SNUG Customer
Page 477 and 478:
H.3.2 Communications Interface H.3.
Page 479 and 480:
Upon determining that the request i
Page 481 and 482:
Appendix I. NASA Integrated Service
Page 483 and 484:
Figure I-1. NISN/SN Legacy Interfac
Page 485 and 486:
I.2.2 Non-IP Routed Data Services P
Page 487 and 488:
Network Control Header Customer Hea
Page 489 and 490:
NOTE: A block with bit 82 set to bi
Page 491 and 492:
Appendix J. Customer Constraints fo
Page 493 and 494:
J.3 Acquisition For S-band DG2 nonc
Page 495 and 496:
Appendix K. Use of Reed-Solomon Cod
Page 497 and 498:
NOTE: Throughout this document, the
Page 499 and 500:
Appendix L. McMurdo TDRSS Relay Sys
Page 501 and 502:
Appendix M. Deleted This page inten
Page 503 and 504:
N.3 Test Services Description Test
Page 505 and 506:
TDRSS component may require the who
Page 507 and 508:
N.6.2 Test Scheduling The use of al
Page 509 and 510:
This page intentionally left blank.
Page 511 and 512:
model also determined duty cycles f
Page 513 and 514:
Page 515 and 516:
P.1 Major System Components P.1.1 C
Page 517 and 518:
P.2 External Interfaces P.2.1 Netwo
Page 519 and 520:
The user will be able to print eith
Page 521 and 522:
SNAS MOC user will be able to speci
Page 523 and 524:
The SNAS will allow a minimum durat
Page 525 and 526:
the DAS Resource Allocation Request
Page 527 and 528:
gateway and a proxy for the Closed
Page 529 and 530:
Figure Q-1. WDISC Overview Q.2.1 IP
Page 531 and 532:
database management, testing, troub
Page 533 and 534:
In general, to obtain SN services,
Page 535 and 536:
scheduling of SN Gateway services a
Page 537 and 538:
Figure R-1. SN Gateway Overview Rev
Page 539 and 540:
Figure R-3. WSC SN Gateway Interfac
Page 541 and 542:
Table R-1. Comparison of Between WD
Page 543 and 544:
Table S-1. TDRSS Forward Service Si
Page 545 and 546:
Service Modulation Coding (2) Data
Page 547 and 548:
Service Data Group DG2 (5) Phase Mo
Page 549 and 550:
Service Data Group Mode Modulation
Page 551 and 552:
Page 553 and 554:
Command Data Telemetry Data Ground
Page 555 and 556:
And Data Handling (C&DH), referred
Page 557 and 558:
Page 559 and 560:
Table U-1. TDRSS MAR Service Recomm
Page 561 and 562:
Table U-2. TDRSS SSAR Service Recom
Page 563 and 564:
Page 565 and 566:
BSR bit slippage rate BW bandwidth
Page 567 and 568:
EET End-to-End Test EIF Engineering
Page 569 and 570:
IRAC Interdepartmental Radio Adviso
Page 571 and 572:
NASCOM NASA Communications Network
Page 573 and 574:
R R range acceleration between a T
Page 575 and 576:
SND Space Network Directive SNG SN
Page 577:
T s receiving system noise temperat
show all

SN User's Guide - ESC Home - NASA

Create successful ePaper yourself

Delete template?

Save as template?