# Presentation: 245500

## MONTHLY STATUS REVIEW 

**MONTHLY STATUS REVIEW**** **
**EOS ICE, CLOUD & LAND ELEVATION**
** ****SATELLITE (ICESat) PROJECT**
**Code 425**
**UPN 227-6**
**   ****	****   ****Project Scientist:                          Dr. J. Zwally**** ****/**** ****971**
**	****   ****Project Manager:                          James Watzin**** ****/**** ****425**
**	****   ****DPM**** ****/**** ****Resources:                          Linda Greenslade**** ****/**** ****425**
**	****   ****Instrument Development:            Ron Follas**** ****/**** ****556**
**	****   ****Instrument Scientist:****	****	****       Dr. J. Abshire**** ****/**** ****924**
**	****   ****Ground System Development:    ESDIS**** ****/**** ****423**
**	****   ****Spacecraft Contractor:                 Ball**

**May 14, 2002**

## ICESat PROJECT SUMMARY

**G**

**G**
**G**
**G**
**G**

**G**

**G**
**G**
**G**
**G**

**R**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

**R**

**Y**

**G**

**G**

**Y**

**G**

**G**

**G**

**Y**

**Y**

**G**
**G**
**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**
**G**
**G**

**ICESat PROJECT SUMMARY**
**STATUS AS OF:  4/30/**** ****02**

_**LEGEND**_

**Good Shape**

**Minor Problem**

**Major Problem**

**Program Management**

**Subcontracts**

**Spacecraft I&T**

**Observatory I&T**

**Subsystems**

**Systems Engineering**

**R&D Budget**

**Procurement**

**Workforce**

**Travel**

**Launch Vehicle**

**Launch Site (VAFB)**

**Ground SYS**** ****/**** ****OPS (EOS)**

**GLAS**

**Technical         Cost          Schedule        Management        Overall**

** ****FEB   MAR   APR**

**Spacecraft Bus:**

**Prime**

**Major Interfaces**

**Resources**

**Instruments**

**Business**

**Science**** ****/**** ****Operations**

**Summary Assessment**

**R**
**G**
**G**
**G**

**Y**

**JPL GPS Receivers**

**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

**GLAS**

** ****FEB   MAR   APR**

**  ****FEB   MAR   APR**

**  ****FEB   MAR  APR**

**  ****FEB   MAR   APR**

**  ****FEB   MAR   APR**

**Y**
**G**
**G**
**G**

**Y**

## GLAS I&T PROBLEMS IN WORK

**Y**

**GLAS boresite stability does not meet mission performance requirements**** **

**CURRENT STATUS**
**Peer Review held.**
**Retest conducted; preliminary results look favorable with major errors traceable to set-up issues.  Detailed data analysis results look promising.**
**Additional analysis initiated on the telescope assembly.**
**Test plan defined.**
**Plan in place to validate; requires completion of environmental test program.**

**GLAS I&T PROBLEMS IN WORK**
**OPTICAL PATH**
**ICESat Project****	****STATUS AS OF:   4/30/02**

**       ****PROBLEM/ISSUES            PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****11/30    6/15**
**      **

**Fundamental measurements may be compromised if behavior persists on orbit.**

**Hold mini-peer review on calibration results**
**Get AETD and systems involvement in development of troubleshooting plan.**

## GLAS I&T PROBLEMS IN WORK

**Intermittent energy monitor on green laser**

**CURRENT STATUS**
**Several troubleshooting tests conducted, inconclusive results.**
**Alternate Etalon operation algorithms in development.**
**Problem understood and board modification solution verified on the engineering model board.  Alternative (baseline) software approaches being investigated and validated.**
**Software fix to be validated in T**** ****/**** ****V testing.**

**GLAS I&T PROBLEMS IN WORK**
**LIDAR OPERATION**
**ICESat Project****	****STATUS AS OF:   4/30/02**

**       ****PROBLEM/ISSUES            PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**   ****12/17    6/15**
**     **

**Y**

**Potential compromise on Etalon operation and data reduction**

**Investigate root cause**
**Investigate alternate means for Etalon operation and data reduction**

## GLAS I&T PROBLEMS IN WORK

**Y**

**CURRENT STATUS**
_**Some spare units being prepared for parallel testing.**_
_**Science Team assessing impact to the mission if failed units are not replaced.**_
_**Code Y meeting scheduled for May 17.**_

**GLAS I&T PROBLEMS IN WORK**
**SPCMS**
**ICESat Project****	****STATUS AS OF:   4/30/02**

**       ****PROBLEM**** ****/**** ****ISSUES          PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
** **_**4/26/02**_**  **_**5/31/02**_

_**Cannot fully meet secondary science objectives.**_

_**Failure of two SPCMs in GLAS thermal vacuum testing.**_

## GLAS ANOMALY FINDINGS

**GLAS ANOMALY FINDINGS**

**SPCM FAILURES (ROOT CAUSE IS UNKNOWN)**
**EACH FAILURE SYMPTOM IS UNIQUE**
**GLAS FLIGHT UNITS WERE ONLY PUT THROUGH AN ABBREVIATED QUALIFICATION PROGRAM, DEFERRING RISK TO INSTRUMENT LEVEL**
**ONLY 1 SPCM ON GLAS HAD EXPERIENCED POWERED OPERATION IN VACUUM PRIOR TO GLAS T/V**
**SPARE FLIGHT SPCMs (5) WERE PUT THROUGH THE SAME ABBREVIATED QUALIFICATION PROGRAM AS THE GLAS UNITS**
**THE 1 UNIT THAT EXPERIENCED POWERED OPERATION IN VACUUM FAILED**
**DEVELOPMENT EFFORT WAS DIFFICULT, SUFFERING VERY LOW YIELD OF FUNCTIONING UNITS (< 50 %)**
**LEADING THEORY ON THE FAILURE MODE IS NOW FOCUSED ON THE DETECTOR CHIP**

## COST

**G**

**ICESat is unfunded beyond 5**** ****/**** ****31**** ****/**** ****02**
**Cost**** ****/**** ****schedule impact of SN001 Laser and other anomalies**

**CURRENT STATUS**
**Schedule and cost requirements ready to be presented to HQ**** ****/**** ****Code Y in mid-March.**
_**Code Y PMC postponed.**_
**Working with Code Y to determine plan for providing additional mission funding.  Plan may require substantial FY02 carryover and FY03 emergency operating plan submittal.**
_**Plan included in POP 02 budget submission, which will be presented to Code Y on May 23.  CLOSED**_

**COST**
**ICESat Project****	****STATUS AS OF:   4/30/02**

**       ****PROBLEM**** ****/**** ****ISSUES          PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****7/**** ****01    11/15**
**     ****Complete**
**  ****11**** ****/**** ****01    2/28**
**     ****Complete**
**    ****4/02      6/02**
**      ****Complete**

**Cannot meet late 2002 LRD without additional funding.**
**Potential additional cost and schedule impact to late 2002 LRD**

**Present overguide requirements to Code Y.**
**Generate cost**** ****/**** ****schedule impacts**
**Pursue budget approval through POP-02 process.**

## PMC ACTION STATUS

_**NONE**_

**PMC ACTION STATUS**

_**Data**__** **__**/**__** **__**Source**_

_**Status**_

**ICESat Project****	****STATUS AS OF:   4/30/02**

## IT SECURITY

**	****Management****	****IT Security****	****Contingency****	****Agency****	****Number****	****Authorization**
_**Element**_**	**_**Plan**_**	**_**Plan**_** ****	**_**Plan**_**	**_**Check**_**	**_**People**_**	**_**To Proceed**_
**Ball / LASP****	****Complete****	****Complete****	****Complete****	****To Center ****	****22****	****Authorized**
**	****	****	****	****Security**
**ISIPS / ISF****	****Final Pending****	****Final Pending****	****Final Pending****	****To be****	****18*****	****N**** ****/**** ****A**
**(GSFC Bldg 22)****	****	****	****	**** Re-assessed**
***Some have to be resubmitted due to changes in IT security requirements.**

**IT SECURITY**

**ICESat Project****	****STATUS AS OF:   4/30/02**

## ICESat SIGNIFICANT PROGRESS

**ICESat SIGNIFICANT PROGRESS**

**ICESat Project****	****STATUS AS OF:   4/30/02**

**GLAS HAS SUCCESSFULLY COMPLETED VIBRATION TESTING**
**GLAS SUCCESSFULLY COMPLETED THERMAL BALANCE.  LOOP HEAT PIPE PERFORMANCE IS NOMINAL.**
**THERMAL VACUUM TESTING IS UNDERWAY.  OTHER THAN THE  SPCM FAILURES, TESTING IS GOING EXTREMELY WELL.  PRIMARY INSTRUMENT PERFORMANCE LOOKS VERY GOOD.  ONE CYCLE LEFT TO GO.**
**GLAS PERFORMANCE TO DATE WAS REVIEWED WITH THE SCIENCE TEAM ON MAY 1.  THE STATUS OF SCIENCE ALGORITHMS AND SCIENCE PERFORMANCE WAS PRESENTED AT THE SCIENCE TEAM MEETING ON MAY 2.**

## ICESat SIGNIFICANT PROGRESS

**ICESat SIGNIFICANT PROGRESS**
**(continued)**

**ICESat Project****	****STATUS AS OF:   4/30/02**

**A SERIES OF INTEGRATED GROUND SYSTEM TESTS (IGST) WERE PERFORMED AS PART OF IGST-3.  ALL TESTS WERE PERFORMED SUCCESSFULLY AND TEST OBJECTIVES WERE MET.**
**A ONE- DAY MISSION OPERATIONS WORKING GROUP (MOWG) MEETING WAS HELD ON APRIL 25 TO REVIEW CURRENT STATUS OF SUPPORT ELEMENTS AND TO COORDINATE UPCOMING ACTIVITIES.**
**GLAS REMAINS ON SCHEDULE TO SHIP JUNE 17.  THE PRE-SHIP REVIEW IS JUNE 11.**

## PROJECT RESERVES

**PROJECT RESERVES**

**ICESat Project****	****STATUS AS OF:   5/14/02**

**Cost:           ****	****Unliened**** ****/**** ****unencumbered reserves****	****=****	****13.5%**
**                     ****in Cost-to-Complete****	****	****	****	**
**	****	****	****	****	**
**Schedule:****	**_**(Unscheduled Months)**_**	****=****	****10%****	**
**	**** ****Year until Launch ****	**
**	****	****	**
**Mass:****	**_**(Allocated-Estimated)%**_**	****=****	**_**1050 – 981**_**	****=****	****6.6%**
**	****Allowed****	****	****1050**
**Power:****	**_**(Allocated-Estimated)%**_**	****=****	**_**792 – 668**_**	****=****	**** 15.7%**
**	****Allocated****	****	****792**

## Slide 13

## ICESat SCHEDULE SLACK

**84**
** ****56**
** ****28**
** ****0**

**D**
**A**
**Y**
**S**

**ICESat SCHEDULE SLACK**

**ICESat Project****	****STATUS AS OF:   5/10/02**

**Mar       Apr      May      Jun      Jul      Aug      Sept      Oct      Nov      Dec 02**
**	****	****	****	****	****	****	****          ****LRD**

**Replan to 12/02 LRD**

## BACKUP

**ICESat**

## PROJECT DESCRIPTION

**PROJECT DESCRIPTION**
**ICE, CLOUD, AND LAND ELEVATION SATELLITE**
**(ICESat)**

_**Mission Objectives**_**:****	**
**        ****1.  Produce high accuracy and calibrated profiles of ice-sheet surface elevations over Greenland**
**             ****and Antarctica.**
**        ****2.  Produce calibrated profiles of global land and ocean surface elevations.**
**        ****3.  Produce calibrated vertical profiles of global cloud heights and vertical distributions of cloud **
**             ****and aerosol properties for the first time.**
**        ****4.  Map high accuracy ice-surface elevation changes over Greenland and Antarctica for the first **
**             ****time.**
**        ****5.  Characterize the seasonal variability of ice-sheet surface elevations over the mission lifetime.**
_**Project Management**_**:****	****	****GSFC/Code 425**
_**Spacecraft**_**:****	****	****Ball Aerospace**
_**GLAS Instrument**_**:****	****	****In-House GSFC**
_**Ground System**_**:****	****	**
**        ****Control Center:****	****	****University of Colorado/LASP**
**        ****Ground Data Handling:****	****                   EOSDIS**
**        ****Science Data Processing: ****	****                   GSFC/Science Computing Facility**
**        ****Data Repository:****	****	****NSIDC**
_**Science Team**_**:****	****	****GSFC, UTX/Austin, UCA/San Diego, UWI/Madison, MIT, and ****	****	****EG&G                        **
_**Development Period**_**:****	****	****2/98 – 12/02**
_**Launch Readiness Date**_**:****	****                   12/19/02**
_**Launch Vehicle**_**: ****	****	****Boeing/Delta 7320, with DPAF**
_**Launch Site**_**:****	****	****Vandenburg AFB, CA**
_**Co-Manifest Partner**_**:****	****	****Cosmic Hot Interstellar Plasma Spectrometer (CHIPSat)**
_**Website**_**:   http://icesat.gsfc.nasa.gov/**

**	****STATUS AS OF:   4/30/02**

## END OF MISSION PLAN DEVELOPMENT

**END OF MISSION PLAN DEVELOPMENT**
**COMPLETED**

_**Final Estimate**_**:  **
**	****Final Orbital Debris Generation report was approved by Headquarters on 4**** ****/**** ****9**** ****/**** ****01.  The total mission package included ICESat, CATSAT, DPAF, and launch vehicle.  Both ICESat and CATSAT meet the 8m****2**** guideline by significant margins.  ICESat is 3.9m****2**** and CATSAT 0.9m****2****.  ICESat will reenter in 15 years, which is well under the 25 year guideline.**
**	**
_**Disposal Option Assessment**_
**	**_**Controlled Reentry**_**:  Not practical -- +240kg additional fuel and 6 months delay**
**	**_**Safe Orbit**_**:  Not feasible -- same as re-entry**
**	**_**Shuttle Recovery**_**:  ICESat polar orbit not accessible to the shuttle; also spacecraft design not manned-flight rated**
**Expect no changes when CHIPSAT data becomes available**

**ICESat Project****	****STATUS AS OF:   4/30/02**

## ICESat PROJECT

**ICESat PROJECT**
**OUTSTANDING PROPOSALS STATUS**

_**Contract Number**_**:  NONE**
_**Contractor**_**:  **
_**Technical Officer**_**:  **
_**Contract Officer**__** **__**/**__** **__**Specialist**_**:  **
_**Type Action**_**:  **
_**In-house Estimate**_**:  **
_**Proposed Value**_**:  **
_**Proposal Date**_**:  **
_**Technical Completion**_
**	****Plan:  **
**	****Actual:  **
_**Award Date**_
**	****Plan:  **
**	****Actual:  **

**ICESat Project****	****STATUS AS OF:   3/31/02**

## ACRONYMS

**ACRONYMS**

**AFT - (GLAS aft optics)**
**AGS - Alaska Ground Station**
**ANT - Antenna**
**ARO - After Receipt of Order**
**ATP - Authority to Proceed**
**CCAS – Cape Canaveral Air Station**
**CM – Center of Mass**
**CPT- Comprehensive Performance Test**
**CTU - Command and Telemetry Unit**
**DBC - Data Bus Coupler**
**DO – Delivery Order**
**DSU - Data Storage Unit**
**EAC – Estimate at Completion**
**E-BOX - Electronics Box (= MEU)**
**EDAC - Error Detection and Correction**
**EIC - Electrical Integration Complete**
**ENV - Environment or Environmental**
**EPS - Electrical Power Subsystem**
**FOR - Flight Operations Review**
**FOT - Flight Operations Team**

**FRR - Flight Readiness Review**
**FSW - Flight Software**
**FSWTB - Flight Software Test Bench**
**HRG - Hemispherical Resonating Gyro**
**HVPS – High Voltage Power Supply**
**IGS - ICESat Ground System**
**IIRR – Instrument Integration Readiness Review**
**IRU - Inertial Reference Units**
**ISF - Instrument Science Facility**
**I-SIPS - ICESat Science Investigator-Led Processing **
**IST - Instrument Star Tracker**
**ITOC - Instrument Test Operations Center**
**LASP - Laboratory for Atmospheric & Space Physics**
**LED – Light-Emitting Diode**
**LHP - Loop Heat Pipe **
**LPA – Laser Profiling Array**
**LRA - Laser Retro-Reflector Assembly**
**LRD - Launch Readiness Date**
**LRR - Launch Readiness Review**
**LRS - Laser Reference System**

**ICESat Project****	****STATUS AS OF:   4/30/02**

## ACRONYMS

**ACRONYMS**

**LSM - Laser Steering Mechanism**
**MEU - Main Electronics Unit**
**MIC - Mechanical Integration Complete**
**MIWG - Mission Integration Working Group**
**MOC - Mission Operations Center**
**MOR - Mission Operations Review**
**MORD - Mission Operations Requirements Doc.**
**MOWG - Mission Operations Working Group**
**MPS - Multi-program Support**
**MRR - Mission Readiness Review**
**NADIR – Earth-facing side of spacecraft**
**NGS - Norway Ground Station**
**NISN - NASA Integrated Services Network**
**NSIDC - National Snow and Ice Data Center**
**NTGSE - (Windows) NT Ground Support Equip**
**ORR - Operational Readiness Review**
**OTS - Optical Test Source**
**PDA - Power Distribution Assembly**
**PDU – Power Distribution Unit**
**PEC - Precise External Clock**

**PRA – Probabilistic Risk Assessment**
**RWA – Reaction Wheel Assembly**
**S**** ****/**** ****A - Solar Array**
**SADA – Solar Array Drive Assembly**
**SADE – Solar Array Drive Electronics**
**SCC - Spacecraft Control Computer**
**SEP - Spacecraft Electronics Package**
**SIPS – Science Investigator-Led Processing System**
**SIRU - Space Inertial Reference Unit**
**SLTC – Space Lidar Technical Center**
**SM - Safe Mode**
**SORD - Systems Operations Requirements Document**
**SPCM - Single Photon Counting Module**
**SRS – Stellar Reference System**

**ICESat Project****	****STATUS AS OF:   4/30/02**

## PROJECT OVERVIEW

**Y**

**PROJECT OVERVIEW**

**ICESat**
_**SIGNIFICANT PROGRESS**_
**GLAS HAS SUCCESSFULLY COMPLETED VIBRATION TESTING.**
**GLAS SUCCESSFULLY COMPLETED THERMAL BALANCE.  LOOP HEAT PIPE PERFORMANCE IS NOMINAL.**
**THERMAL VACUUM TESTING IS UNDERWAY.  OTHER THAN THE  SPCM FAILURES, TESTING IS GOING EXTREMELY WELL.  PRIMARY INSTRUMENT PERFORMANCE LOOKS VERY GOOD.  ONE CYCLE LEFT TO GO.**
**GLAS PERFORMANCE TO DATE WAS REVIEWED WITH THE SCIENCE TEAM ON MAY 1.  THE STATUS OF SCIENCE ALGORITHMS AND SCIENCE PERFORMANCE WERE PRESENTED AT THE SCIENCE TEAM MEETING ON MAY 2.**
**A SERIES OF INTEGRATED GROUND SYSTEM TESTS (IGST) WERE PERFORMED AS PART OF IGST-3.  ALL TESTS WERE PERFORMED SUCCESSFULLY AND TEST OBJECTIVES WERE MET.**
**A ONE-DAY MISSION OPERATIONS WORKING GROUP (MOWG) MEETING WAS HELD ON APRIL 25 TO REVIEW CURRENT STATUS OF SUPPORT ELEMENTS AND TO COORDINATE UPCOMING ACTIVITIES.**
**GLAS REMAINS ON SCHEDULE TO SHIP JUNE 17.  THE PRE-SHIP REVIEW IS JUNE 11.**
_**ISSUES / CONCERNS**_
**IMPACT OF SPCM FAILURES ON SECONDARY SCIENCE.**

**ICESat Project****	****STATUS AS OF:   4/30/02**