# Presentation: 285868

##  Status of ADEOS-II Spacecraft

The 37th ARGOS Operations Committee MeetingJune 11-13, 2003    @Les Saintes-Marie-de-la-Mer, France

Yasushi Kojima 
ADEOS-II Project team
NASDA

- The 37th ARGOS Operations Committee MeetingJune 11-13, 2003    @Les Saintes-Marie-de-la-Mer, France
- Yasushi Kojima
- ADEOS-II Project team
- NASDA

## Contents

**1. ADEOS-II satellite overview**
**        ****- ADEOS-II**
**        ****- DCS (Data Collection system)**
**2. Evaluation result of checkout phase**
**        ****- Launch **
**        ****- Checkout phase **
**3. Conclusion**

## Mission Objectives

**Mission Objectives**

-  The Advanced Earth Observing Satellite-II(ADEOS-II), the successor of the Advanced Earth Observing Satellite (ADEOS), was developed to acquire data for global climate change research,as well as for applications such as meteorology and fishery activities.

## 1. ADEOS-II overview  

_**1. ADEOS-II overview  **_

- Exterior・Configuration : Module with a single solar array paddle
- Dimension
-   Main Body	:Approx. 6m×4m×4m (X-axis×Y-axis×Z-axis)
-   Solar Array Paddle :Approx. 3m×24m
- Total Mass     : 3.68t Mission Instrument Mass: 1.23t
- Power Generation: 5,350W (End of Life)
- Designed life   	: 3years (Propellant 5years)
- Orbit    	: Sun-synchronous sub-recurrent orbit
-   Altitude	: 802.92km
-   Orbit Inclination    : 98.62 ゚
-   Period      	    : 101 minutes
-   Recurrent Period : 4 days
-   Local Sun Time   : AM 10:30
- Launch Site:Tanegashima Space Center
- Launch Vehicle	:H-IIA Rocket

- ADEOS-II Orbital Configuration

## 1. ADEOS-II overview  

**GLI **
** ****Global Imager**

**IOCS**
**Inter Orbital **
**Communication Subsystem**

**AMSR-SENS**
**Advanced Microwave **
**Scanning Radiometer-Sensor**

**VMS**
**Visual Monitoring System**

**DTL**
**Direct Transmission For Local Users**

**PDL**
**Paddle Assembly**

**ILAS-II**

**Improved Limb Atomospheric **
**Spectrometer-II**

**          ****C&DH**
**         ****Communication & Data **
**         ****Handling Subsystem**

**Seawinds-SAS**
**Seawinds ****(****Antenna****)**

**            ****POLDER**
**Polarization and Directionality**
** ****of the Earth’s Reflectance**

**    ****ESA**
** ****Earth Sensor **
**  ****Assembly**

** DT**
**Direct Transmission**

**      ****D****CS**
**Data Collection System**

**AMSR-CONT**
**Advanced Microwave **
**Scanning Radiometer **
**-Controller**

**AOCS**
**Attitude and Orbit **
**Control Subsystem**

**MDP**
**Mission Data**
** ****Processing **
**Subsystem**

- +Z

**+Y**

- +X

- Direction of Earth

**ADEOS-II**

## 1. ADEOS-II overview  

**DCS (Data Collection System)**

## 2. Evaluation result of check out phase  

**ADEOS-II was launched at 10:31:00 on 14 December, 2002 from Tanegashima Space Center by H-IIA#4.**
**16min 32sec after launch, ADEOS-II was injected to expected orbit very precisely.**

|  | Plan | Result | Error |
| --- | --- | --- | --- |
| Semi major axis [km] | 7190 (+/- 20) | 7190 | 0 |
| Eccentricity  | 0.001 (0 – 0.004) | 0.001 | 0 |
| Inclination [degree] | 98.67 (+/- 0.25) | 98.68 | 0.01 |

_**2. Evaluation result of check out phase  **_

## 2. Evaluation result of check out phase  

**Milestone**

- ▲

- 12/14 launch

- Initial Critical Phase (to 12/17)

-         (to 1/10)

**Bus**

**Instruments**

**ETO**

**System Total**

- 2003

- Apr

- Mar

- 2002

- Dec

- Jan

- Feb

- Checkout Phase

- Critical Phase

- 12/15

- 4/9

- 2/17

- 3/10

- 3/29

- IOCS(ARTEMIS)

- 3/27

- 3/29

- 1/21

- 2/23

- 3/19

- 3/22

- 4/2

- 4/9

- 1/20

- 2/26

- 2/21

- 2/27

- 1

- IOCS(DRTS)

- 4/14

- Checkout Completion Review

- Cal/Val Phase

**Check out phase **

_**2. Evaluation result of check out phase  **_

## 14 December
	Rev.0:	Three axis control, PDL boom deployment
	Rev.1:	PDL mast deployment, PDL Sun tracking
		Instruments power on
	Rev.7:	SeaWinds V-band release
15 December
	Rev.8:	IOCS antenna deployment #1
16 December
	X band checkout
17 December
	IOCS antenna deployment #2
	Transition to Normal attitude control using gyros

_**14 December**_
**	****Rev.0:****	****Three axis control, PDL boom deployment**
**	****Rev.1:****	****PDL mast deployment, PDL Sun tracking**
**	****	****Instruments power on**
**	****Rev.7:****	****SeaWinds V-band release**
_**15 December**_
**	****Rev.8:****	****IOCS antenna deployment #1**
_**16 December**_
**	****X band checkout**
_**17 December**_
**	****IOCS antenna deployment #2**
**	****Transition to Normal attitude control using gyros**

**Check out phase **

_**2. Evaluation result of check out phase  **_

## 18 December, 2002
	DCS antenna deployment

20 December, 2002 - 10 January, 2003 
AMSR antenna spin up
Initial Orbit Control
GLI detector cool down

29 January, 2003
      DCS operational mode start
      DRU8 ON
      TX ON

1 February, 2003 
      DRU7 ON

**	****DCS antenna deployment**
_**20 December, 2002 - 10 January, 2003**_** **
**AMSR antenna spin up**
**Initial Orbit Control**
**GLI detector cool down**
_**29 January, 2003**_
**      ****DCS operational mode start**
**      ****DRU8 ON**
**      ****TX ON**
_**1 February, 2003**_** **
**      ****DRU7 ON**
**   **

**Check out phase **

_**2. Evaluation result of check out phase  **_

_**4 February, 2003**_
**      ****DRU6 ON**
_**9 February, 2003**_** **
**      ****DRU5 ON**
_**13 February, 2003**_
**      ****DRU4 – DRU1 ON**** ****    **

## 2. Evaluation result of check out phase  

***Bus systems***
**- Communication and Data Handling Subsystem (C&DH)**
**- Mission Data Processing Subsystem (MDP)**
**- Inter Orbit Communication Subsystem (IOCS)**
**- Direct Transmission Subsystem (DT)**
**- Direct Transmission to Local users subsystem (DTL)**
**- Electric Power Subsystem (EPS)**
**- Reaction Control Subsystem (RCS)**
**- Solar Array Paddle Subsystem (PDL)**
**- Attitude and Orbit Control Subsystem (AOCS)**
**- Optical Disk Recorder (ODR)**
**- Visible Monitoring Subsystem (VMS)**
**- Dynamic Monitoring Subsystem (DMS)**
**- Thermal Control Subsystem (TCS)**

**Check out phase **

_**2. Evaluation result of check out phase  **_

_***OK***_

## 2. Evaluation result of check out phase  

_**Data Collection System (DCS)**_**  **
**Antenna deployment:****	****OK**
**UHF Tx/Rx:****	****	****OK**
**   ****  ****< ****Analysis of On Board DCS Antenna pattern >**
-              - Onboard DCS antenna pattern was analyzed.
-              - NASDA reference DCP (PMT) measured 22 passes of DCS UHF
-                down link level in Broadcasting mode, with a support of CNES/CLS.
-              - “Estimated pattern” was calculated from PMT measured reception
-                  level and onboard DCS transmitting power in HK data. “Estimated
-                  pattern” was compared with ADEOS-II DCS “scale model antenna
-                  pattern”. Both patterns fit fairly well.
-              - DCS antenna pattern is OK.
**CNES components      OK**

_***OK***_

**Check out phase **

_**2. Evaluation result of check out phase  **_

_**Checkout Result**_

## 2. Evaluation result of check out phase  

_**- GLI (GLobal Imager)**_
_**- AMSR (Advanced Microwave Scanning Radiometer)**_
_**- ILAS-II (Improved Limb Atmospheric Spectrometer-II)**_
_**- SeaWinds (SeaWinds Scatterometer)**_
_**- POLDER (Polarization and Directionality of the Earth’s surface)**_

**Check out phase **

_**2. Evaluation result of check out phase  **_

_**Checkout Result**_

***OK***

**GLI First Image on Jan 25, 2003**

**AMSR images**
**Sea surface**
** ****temperature**

## 2. Evaluation result of check out phase  

**Minor anomalies were occurred in checkout phase. But these were not significant for ADEOS-II operation in “Calibration/Validation Phase”.**
**Checkout Completion Review was hold on 14 April. **
**NASDA internal review board approved completion of  **
**   “****Checkout Phase” and transition to **
**   “****Calibration/Validation Phase”.**

**Check out phase **

_**2. Evaluation result of check out phase  **_

## 3. Conclusion  

**        ****- There were no significant problems.**
**        ****- Telemetry trends are as expected.**
**        ****- Performance and function is good.**
_**       **_
_**ADEOS-II and DCS has been working well in **__** **_
** **_**Routine Operations since 14 April.**_
**  **

_**3. Conclusion  **_