# Presentation: 157128

## Agenda

- Introduction
- I&T Objectives
- Proposed I&T Test Scenarios
- I&T Tests
- Other S/C Test Opportunities for EGS
- Compatibility Tests
- On-Going activities
- Conclusion

## Introduction

- I&T team provides independent verification of ground system readiness.
- I&T team creates mission unique test plan to verify documented system requirements.
- Test Plan comprised of comprehensive set of element level test requirements and organized into Integrated Tests.
- The Integrated Testing approach is used to systematically verify ground system interfaces and functionality.  Each test is a building block for later tests.

## I&T Objectives

- Verify EGS can support all mission requirements as
- 	documented in ICESAT requirements documentation.
- Verify EGS readiness to support spacecraft compatibility tests.
- Verify site to site connectivity (BASD/GSFC/EPGN).
- Document anomalies and monitor resolution.

## Proposed I&T Test Scenarios

- Scheduling Test
- S-Band Command & Telemetry Data Flow
- X-Band Science Data Flow
- Ground System End-to-End
- Launch Site Test

## I&T #1: Scheduling Test

- Purpose: 		Exercise Scheduling Interfaces within the 			ICESAT Ground System
- Participants: 		MOC, WOTIS, EDOS, EPGN, EBNET
- Description:		MOC generates test schedules
- 			Schedules sent to EDOS
- 			Schedules sent to EPGN via WOTIS
- 			MOC generates IIRV’s
- 			IIRV’s sent to EPGN via WOTIS

## I&T #2: S-Band Command & Telemetry Data Flow

- Purpose: 	Exercise S-Band Command & Telemetry 		interfaces within the ICESAT ground system
- Participants: 	MOC, WOTIS, EPGN, EDOS, EBNET
- Description:	Test scheduled by MOC through WOTIS
- 		MOC generates commands
- 		Commands sent to and validated by EPGN
- 		Taped data flows from EPGN to MOC
- 			(via EDOS TBD)

## I&T #3: X-Band Science Data Flow 

- Purpose: 		Exercise X-Band science data flow interfaces 			within the ICESAT ground system
- Participants: 		MOC, WOTIS, EPGN, EDOS, DAAC, EBNET
- Description: 		Test scheduled by MOC through WOTIS
- 			Taped Science data flows from EPGN to EDOS
- 			EDOS processes data and flows to DAAC

## I&T #4: Ground System ETE 

- Purpose: 	Exercise complete ICESAT ground 				system in an integrated fashion
- Participants: 	MOC, WOTIS, EPGN, EDOS, DAAC, EBNET
- Description: 	Integration of I&T #1, 2 and 3

## I&T #5: Launch Site Test 

- Purpose: 	Final ground system checkout and launch 		site interface test
- Participants: 	MOC, WOTIS, EPGN. EDOS, EBNET, VAFB
- Description: 	TBD

## Other S/C TestOpportunities for EGS

- These are tests planned by ICESAT.  These tests may present additional opportunities for EOC/EGS to piggyback on planned ICESAT test activities and interface with spacecraft.

- S/C Functional  Test (FT)
- S/C Acceptance Test (AT)
- Instrument Verification Tests
- Thermal Vac/EMI
- Other Environmental Tests
- Performance Tests
- Long Duration Performance (100 Hour Test)

## Spacecraft - Ground SystemCompatibility Tests (GSCTs)

_**Test Name**_** ****	**_**Date**_
- 	GSCT #1	L-18 Months
- 	GSCT #2	L-12 Months
- 	GSCT #3	L-7 Months
- 	GSCT #4	L-5 Months
- 	GSCT #5	L-4 Months
- 	GSCT #6	L-1.5 Months

_**Description**_
- S/C - G/S Basic TLM and CMD
- RF: TLM and CMD (CTV)
- Instrument Operations
- End to End dry run
- End to End (Pre-ship)
- Launch Site Testing

## On-Going Activities

- Need to work with ICESAT Project Team to integrate S/C schedules with G/S I&T schedules.
- Need to set up ICESAT/Mission Systems Test Planning Working Group (TPWG) to provide forum to refine tests.
- Need to Identify/Develop Test Requirements Database.

## Conclusion

- Ground System Integration & Testing provides benefits by:
- Mitigating risk
- Ensures highest level of compatibility; both functionally and operationally between Spacecraft and ground support systems.
- Provides independent evaluation of ground system.
- Reports directly to management.