From JVelasco@jftl.jpl.nasa.gov Wed Aug 24 12:50:43 2005 Return-Path: Received: from jftl.jpl.nasa.gov (jftl.jpl.nasa.gov [128.149.207.22]) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) with SMTP id j7OJoer01116 for ; Wed, 24 Aug 2005 12:50:40 -0700 (PDT) Received: from jftl.jpl.nasa.gov (Not Verified[128.149.207.21]) by jftl.jpl.nasa.gov with MailMarshal (v5,0,3,100) id ; Wed, 24 Aug 2005 12:51:40 -0700 Received: by jftl-mm.jpl.nasa.gov with Internet Mail Service (5.5.2657.72) id ; Wed, 24 Aug 2005 12:50:37 -0700 Message-ID: <12373B687CF8324F843BE0CA103AA6F40394D6A8@jftl-mm.jpl.nasa.gov> From: "Velasco, Jesse" To: DSN-MPSETD , "GDSCC Operations," , "'gene Goltz'" , "'Asmar, Sami W'" , DSN-OPS-CHIEFS , DSN-RMDCT , DSNO&M-DSOT , DSN-NOCC , "'Hodder, James A'" , "Bracamonte, Larry H" Cc: DSN-PREDICTS , MDSCC-Operations , "Beyer, Patrick E" , "Berman, Allen L" , "Thompson, Thomas W" , "Landon, Arthur J" , "Wallick, Jack" , "Holmes, Dwight P" , "'Dick Simpson 650-723-3525'" , "'John Reynolds (John.Reynolds@esa.int)'" , "'Michel.Denis-esa.int'" , "'Olivier.Reboud@esa.int'" , CDSCC , "Berner, Jeff B" , "Guerrero, Anamaria P" , "Kurtik, Susan C" , "Marina, Miguel" , "Hodgin, Wendy K" Subject: BRIEFING MESSAGE FOR MEX BISTATIC RADAR EXPERIMENT WEEK34 REVISION 1 Date: Wed, 24 Aug 2005 12:50:21 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: multipart/mixed; boundary="----_=_NextPart_000_01C5A8E5.0DE94160" Content-Length: 365679 Status: RO This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ... Mars Express Briefing Message Level 3 Bistatic Radar Experiment Support Prepared by: JESSE VELASCO / MEX / NOPE / MPSETD Origination Date: DOY 235 / 15:00 UTC Revision: 1, DOY 236/ 1900 UTC DSS-14 DOY 238/ 1230 UTC DSS-14 DOY 239/ 0900 UTC ROUTING: JFTL / JJPL / JGTS FROM: MPSETD J. Velasco SUBJECT: DSS-14 Mars Express Bistatic Radar Support REVISION: SOE for DOY 238 updated, at 15:20:59 AOS S-band un-modulated 1-way deleted NOP: 871-049-041, REV.B SCHEDULE: Refer to DSN 7-Day Schedule for actual support times. DOY SOA BOT EOT EOA FACILITY USER ACTIVITY PASS 238 1230 1530 1850 1950 DSS-14 MEX BISTATIC 0817 239 0900 1200 1505 1605 DSS-14 MEX BISTATIC 0818 TYPE: Level 3 / Bistatic Radar Experiment Support 1. OVERVIEW: DSS-14 is scheduled to support a Mars Express bistatic radar (BSR) experiment on DOY 205. BSR experiment employs the MEX spacecraft's transmitter and a DSN 70-m antenna to simultaneous receive weak S-band and X-band right hand circular and left hand circular polarized signals. These four RF signals are then routed to and recorded by Radio Science Receivers (RSRs). At a predetermined time during the pass, the spacecraft slews toward Mars so that its transmitted S-band and X-band RCP signals illuminate the planet's surface. As the X and S-band RCP signals reflect off the surface, a Left Circular Polarization (LCP) signal is produced effectively creating four signals; 1) S-band RCP, 2) S-band LCP, 3) X-band RCP and 4) X-band LCP. 2. SUPPORT DOCUMENTATION: a. Mars Express NOP 871-049-041, Rev. A b. This briefing message c. The attached bistatic radar SOE supersedes the DSN SOE. Radio Science shall provide start/stop times of BSR mini-pre-calibrations near real-time. 3. SUPPORT REQUIREMENTS: a. DOWNLINK SUPPORT ONLY b. DTTS (DOWNLINK TRACKING AND TELEMETRY) RECEIVERS: * One DTT shall be configured with table 7041HRX to support X-band, and to control the 12.5k noise diode on/off at predetermined times during pre-pass calibrations, real-time BSR activities and post calibrations activities. * A second DTT shall be configured with table 7041HRXS to support S-band carrier lock only and to control the 12.5 k noise diode on/off at predetermined times during pre-pass calibrations, real-time BSR activities and post calibrations activities. c. UPLINK * There are NO uplink requirements d. COMMAND: There are NO command requirements e. RADIO SCIENCE RECEIVERS (RSRS): NOTE: For remote operations the FSPR must not be assigned to the DSS link. The RSRs are controlled and configured remotely by the Radio Science group located at JPL. The RSR operator will configure four radio science receivers to simultaneously receive and record S-band and X-band RCP and LCP polarized signals. The RSR equipment requires both S-band and X-band 1-way and 2-way downlink predicts. The actual RSR resources configured for support will depend on availability. 1. R1B IFS 14_S_RCP 2. R2A IFS 14_S_LCP 3. R1A IFS 14_X_RCP 4. R2B IFS 14_X_LCP 4. NOCT: Transmit X-band up/down, and X-up/S-band down predicts to the station 5. GCF: Voice: DSS /ROC MOPS/AMMOS/MEX MOC/ DSN OPS (RS) 6. DSOT There is NO SLE telemetry return link services required 7. SPACECRAFT CONFIGURATION: The spacecraft shall be reconfigured for X-band and S-band downlink carrier only in accordance with the BSR SOE ( see attachment) 8. PRE-CALIBRATION PROCEDURES AND CONFIGURATION a. Pre-calibration requires configuring the 70m-antenna microwave subsystem so that each receiving downlink channel (S-RCP, S-LCP, X-RCP, X-LCP) can be cycled in sequence through the four configurations listed here: 1. Receiving channel into ambient load with noise diode off 2. Receiving channel into ambient load with noise diode on 3. Receiving channel into sky (zenith) with noise diode on 4. Receiving channel into sky (zenith) with noise diode off b. Link Controller perform the procedures in step-1 (below) and advise Radio Science when completed; wait here until directed by Radio Science to proceed to step-2. Step-01 00:00:00 US14 MOD 102 A Confirm dichroic reflector in place US14 CNF XRA1O1 X-RCP (LNA-1) to Sky US14 CNF XLA2O2 X-LCP (LNA-2) to Sky US14 CNF SLLA2C2O2 S-LCP (LNA-2) low noise to Sky US14 CNF SRDA1C1O1 S-RCP (LNA-1) via Diplexer to Sky AP SCAN D Conscan Off AP TRK SR Sub-reflector in Tracking Mode NOPE: Utilizing the Connection Log Display, ensure DSS-14's micro wave switch configurations are set in accordance with step-1 c. Radio science operator after verifying correct signals levels, direct link controller to proceed to step 2 Step-02 00:04:00 US14 CNF XA1A2O2 LNA2 to ambient load-1 (X-LCP) US14 CNF XA1A1O1 LNA1 to ambient load-1 (X-RCP) Step-03 00:06:00 US14 CNF SA2A2C2O2 LNA2 to ambient load-2 (S-LCP) Step-04 00:08:00 US14 CNF SA1A1C1O1 LNA1 to ambient load-1 (S-RCP) * After steps 2, 3, and 4 (above) have been completed, perform procedures given below in steps a through e: a. Link Controller report ambient load temperatures (S1, S2, and X1) from the PRFREA display and report current weather conditions, (temperature, humidity, and sky conditions) to the Radio Science operator. b. Radio Science operator set each RSR attenuator using AUTO feature c. RSR operator run radio science recorders d. RSR operator report to Link Controller when radio science recorders are recording e. Link controller execute the following procedures at 5 min intervals and report the completion of each step to the RSR operator: NOTE: The Downlink Channel (DC) configurations given below utilize DC01 for X-band and DC02 for S-band, but any available DC0 resource can be used. ATTENTION: Exercise care and do not confuse the number "0" with the letter "O", for example "DC01" and "DSS14XO1" Step-05 00:10:00 DC01 DISC DC01 CONN DSS14XO1 Configure DTT 01 to X-RCP DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON DC02 DISC DC02 CONN DSS14SO1 Configure DTT 02 to S-RCP DC02 SET SNT NDS=12.5 (possible problems with DC02 SET SNT MFQ=ON 'SET': syntax error) Step-06 00:15:00 DC01 SNT E Enable X-RCP noise diode Step-07 00:20:00 US14 CNF XRA1O1 X-RCP to sky US14 CNF XLA2O2 X-LCP to sky Step-08 00:25:00 DC01 SNT D Disable X-RCP noise diode DC01 DISC Reconfigure DTT 01 for X-LCP DC01 CONN DSS14XO2 DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-09 00:30:00 DC01 SNT E Enable X-LCP noise diode CONFIRM NOISE DIODE SELECTION IS 12.5 Step-10 00:35:00 US14 CNF XA1A1O1 X-RCP (LNA-1) to ambient load US14 CNF XA1A1O2 X-LCP (LNA-1) to ambient load 00:36:00 Link Controller report ambient load temp (S1, S2, X1) from the PRFREA display to the RS operator. Step-11 00:40:00 DC01 SNT D Disable X-LCP noise diode Step-12 00:45:00 US14 CNF XRA1O1 X-RCP (LNA-1) to sky US14 CNF XLA2O2 X-LCP (LNA-2) to sky Step-13 00:50:00 DC02 SNT E Enable S-RCP noise diode DC01 DISC Reconfigure DTT 01 for X-RCP DC01 CONN DSS14XO1 DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-14 00:55:00 US14 CNF SRDA1C1O1 S-RCP (LNA-1) via diplexer to sky Step-15 01:00:00 DC02 SNT D Disable S-RCP noise diode DC02 DISC Reconfigure DTT 02 for S-LCP DC02 CONN DSS14SO2 DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON CONFIRM NOISE DIODE IS 12.5 Step-16 01:05:00 DC02 SNT E Enable S-LCP noise diode Step-17 01:10:00 US14 CNF SLLA2C2O2 S-LCP (LNA-2) to sky Step-18 01:15:00 DC02 SNT D Disable S-LCP noise diode DC02 DISC Reconfigure DTT 02 for S-RCP DC02 CONN DSS14SO1 DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON Link Controller report ambient load temp (S1, S2, X1) from the PRFREA display to the RS operator. 01:20:00 End of BSR pre-calibration procedures, configure for real-time and wait for acquisition of signal 9. MINI CALIBRATION PROCEDURES AND TIMELINE Link Controller, shortly after MEX begins its slew and before the BSR surface observations begin, confirm DTT 01 and DTT 02 configurations. a. Link Controller confirm DTT 01 is configured for X-RCP; if not, perform the following operator directives: * DC01 DISC * DC01 CONN DSS14XO1 * DC01 SET SNT NDS=12.5 * DC01 SET SNT MFQ=ON b. Link Controller confirm DTT 02 is configured for S-RCP; if not, perform the following operator directives: * DC02 DISC * DC02 CONN DSS14SO1 * DC02 SET SNT NDS=12.5 * DC02 SET SNT MFQ=ON c. RSR operator ensure all Radio Science Recorders are recording. d. Link Controller, at direction from RSR operator begin the BSR mini-noise calibration procedures (step-1 through step-6. The times shown are to illustrate event chronology and event duration: Step-01 00:00:00 DC01 SNT E Enable X-RCP noise diode CONFIRM NOISE DIODE VALUE IS 12.5 Step-02 00:03:00 DC01 SNT D Disable X-RCP noise diode DC02 SNT E Enable S-RCP noise diode DC01 DISC Reconfigure DTT 01 for X-LCP DC01 CONN DSS14XO2 US14 D XMAP Verify configuration DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-03 00:06:00 DC02 SNT D Disable S-RCP noise diode DC01 SNT E Enable X-LCP noise diode DC02 DISC Reconfigure DTT 02 for S-LCP DC02 CONN DSS14SO2 US14 D SMAP Verify configuration DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON Step-04 00:09:00 DC01 SNT D Disable X-LCP noise diode DC02 SNT E Enable S-LCP noise diode DC01 DISC Reconfigure DTT 01 for X-RCP DC01 CONN DSS14XO1 US14 D XMAP Verify configuration DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-05 00:12:00 DC02 SNT D Disable S-LCP noise diode DC02 DISC Reconfigure DTT 02 for S-RCP DC02 CONN DSS14SO1 US14 D SMAP Verify configuration DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON 00:15:00 End of BSR Mini-Noise Cal Step-06 Link Controller, repeat the BSR mini-noise calibration procedures steps 1-5 after MEX has completed its surface observations and before it returns to Earth point. The start time will be provided by radio science. 10. POST CALIBRATION PROCEDURES AND TIMELINE: Link Controller, at direction from RSR operator begin post-calibration procedures (step-1 through step-10). The times shown are to illustrate event chronology and event duration: Step-01 00:00:00 Link controller move antenna to zenith (do not stow) US14 CNF SA1A1C1O1 LNA1 to ambient load1 (S-RCP) US14 CNF SA2A2C2O2 LNA2 to ambient load2 (S-LCP) US14 CNF XA1A1O1 LNA1 to ambient load1 (X-RCP) US14 CNF XA1A2O2 LNA2 to ambient load1 (X-LCP) DC01 DISC Configure DTT 01 for X-RCP DC01 CONN DSS14XO1 DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON DC02 DISC Configure DTT 02 for S-RCP DC02 CONN DSS14SO1 DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON a. Link Controller advise the RSR operator when the antenna is at zenith and the configurations listed above have been completed. b. Link Controller report physical temperatures of each ambient load (S1, S2, and X1) from the downlink PRFREA display. c. RSR operator run all Radio Science Recorders and record ambient loads for 3 min. At completion, advise the Link Controller to proceed with the following steps: Step-02 00:03:00 DC01 SNT E Enable X-RCP noise diode Step-03 00:06:00 DC01 SNT D Disable X-RCP noise diode DC02 SNT E Enable S-RCP noise diode DC01 DISC Reconfigure DTT 01 for X-LCP DC01 CONN DSS14XO2 DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-04 00:09:00 DC02 SNT D Disable S-RCP noise diode DC01 SNT E Enable X-LCP noise diode DC02 DISC Reconfigure DTT 02 for S-LCP DC02 CONN DSS14SO2 DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON Step-05 00:12:00 DC01 SNT D Disable X-LCP noise Diode DC02 SNT E Enable S-LCP noise diode Step-06 00:15:00 US14 CNF SRDA1C1O1 S-RCP (LNA-1) to sky US14 CNF SLLA2C2O2 S-LCP (LNA-2) to sky US14 CNF XRA1O1 X-RCP (LNA-1) to sky US14 CNF XLA2O2 X-LCP (LNA-2) to sky Step-07 00:18:00 DC02 SNT D Disable S-LCP noise diode DC01 SNT E Enable X-LCP noise diode DC02 DISC Reconfigure DTT 02 for S-RCP DC02 CONN DSS14SO1 DC02 SET SNT NDS=12.5 DC02 SET SNT MFQ=ON Step-08 00:21:00 DC01 SNT D Disable X-LCP noise diode DC02 SNT E Enable S-RCP noise diode DC01 DISC Reconfigure DTT 01 for X-RCP DC01 CONN DSS14XO1 DC01 SET SNT NDS=12.5 DC01 SET SNT MFQ=ON Step-09 00:24:00 DC02 SNT D Disable S-RCP noise diode DC01 SNT E Enable X-RCP noise diode Step-10 00:27:00 DC01 SNT D Disable X-RCP noise diode 00:30:00 End a. Link Controller report physical temperatures of each b.ambient load (S1, S2, and X1) from the downlink PRFREA display and report the current weather (temperature, humidity, and sky conditions) to radio science c. Radio Science operator stop RSRs d. End of BSR noise post-calibration procedures e. Link Controller proceed with normal tear-down procedures f. Re-initialization of the DTTs is recommended MPSETD POINTS OF CONTACT: DSN-MPSETD@jjpl.jpl.nasa.gov MPSETD OFFICE OPS WORK STATION Jose Valencia (LEAD) (626) 305-6308 (626) 305-6370 (626) 305-6368 Jesse Velasco (NOPE) (626) 305-6315 Romy Paredes (NOPE) (626) 305-6309 Greg Hewitt (NOPE (626) 305-6292 RADIO SCIENCE WORK STATION (818) 393- 0666