# Presentation: 845183

##       
NOAA POES PROGRAMOn Orbit Satellite Performance
June 2008

Mickey Fitzmaurice, NOAA/NESDIS/OSDPD

**NOAA POES PROGRAM****On Orbit Satellite Performance**
- June 2008
- Mickey Fitzmaurice, NOAA/NESDIS/OSDPD

## TOPICS

- 2

**TOPICS**

**STATUS OF OPERATIONAL SATELLITES**
-  NOAA-15 through 18
-  Drift rates and Equator Crossing Times
**SATELLITE CONSTELLATION STATUS**
-  NOAA-15 through 18 (data recovery priority)
-  Instrument and Subsystem Status
-  Real-time Orbits
- NSV Development and Status

## STATUS OF OPERATIONAL SATELLITES

_**NOAA-18/N **_**(Launched May 2005)**
- PM Satellite (Primary orbit)
*DCS *has DRU8 anomaly, all other DRUs functional
- Technical status:
- Currently, SOCC retrieves all DCS data for every 24 hour period through GAC playbacks because of OV period equivalent with primary afternoon mission priority (10-11 playback passes/day).
- NOAA is now receiving blind orbit GACs from Eumetsat’s Svalbard facility operationally since mid-Summer 07.

## STATUS OF OPERATIONAL SATELLITES

- 4

**STATUS OF**** OPERATIONAL SATELLITES**

_**NOAA-17/M **_**(Launched June 2002) **
**mid AM Satellite (Secondary orbit), shadows MetOp ~50 day intervals**
*DCS Fully Operational*
- AMSU A1 failure-power supply (this still requires NOAA 15 data recovery, good effect/result for Argos)
- Technical status:
- STX3 degradation (affects very small dish users of HRPT) so HRPT switched to 1698 Mhz (STX 1)
- Currently, SOCC retrieves all DCS data for every 24 hour period through GAC playbacks with secondary morning mission priority (10-11 playback passes/day) behind the MetOp-A satellite.
- NOAA is still planning to use the IPO’s Svalbard antenna (a NOAA controlled asset) with a new interface into the SOCC.  The IJPS interface which was used during “proof of concept testing and development” was deemed a critical asset and caused scheduling issues with N18 blind orbit supports.  SOCC now plans to retrieve blind orbit GACs beginning via a discrete interface into SOCC without impacting N18 from Eumetsat Svalbard.

## STATUS OF OPERATIONAL SATELLITES

- 5

**STATUS OF**** OPERATIONAL SATELLITES**

_**NOAA-16/L **_**(Launched Sep 2000)**
- PM Satellite (Secondary orbit)
*DCS Fully Operational*
*HRPT on STX2 (RHCP)*
- Technical status:
- Currently, SOCC retrieves all DCS data for every 24 hour period through GAC playbacks with secondary PM mission priority (10-11 playback passes/day), N18 is primary mission asset.
- Data recovery could be increased dramatically using the NPOESS Svalbard facility is used operationally, but, conflicts with N18 over Svalbard at similar times means blind orbit recovery not operationally feasible (it needs to use the same interface into SOCC).

## STATUS OF OPERATIONAL SATELLITES

- 6

**STATUS OF**** OPERATIONAL SATELLITES**

_**NOAA-15/K **_**(Launched May 1998)**
- Secondary AM Satellite, but, due to erratic AVHRR, HIRS, and AMSU on NOAA-16 and NOAA-17, data recovery priority is elevated
- HRPT on STX2 (LHCP)
- Most instruments operating nominally
*DCS Fully Operational*
- Technical Status:
- Currently, SOCC retrieves all DCS data for every 24 hour period through GAC playbacks with ***primary*** morning mission data priority (8 playback passes/day), ***i.e., unique orbit plane.***
- Antenna anomalies allow only a single omni directional antenna to be used for non-realtime (GAC) data retrieval.

## Current Constellation Orbital Configuration

**Sun**

- Current Constellation Orbital Configuration

**NOAA-15**

**NOAA-16**

**NOAA-18**

**METOP A**

**NOAA-17**

- Constellation as of 5/19/08

**17:06 (drift -1.5 min/month)**

- Mean Local Times at the Ascending Node (hh:mm)

**16:35 (drift +4.4 min/month)**

**21:31 (drift +0.41 min/month)**

**13:36 (drift 0.1 min/month)**

**12:00**
**Noon**

**00:00**

**18:00**

**06:00**

**21:58 (drift +4.4 min/month)**

## Looking down at the North Pole with the orbit planes relative to the sun line

## CURRENT ON-ORBIT DATA CONFIGURATION17 March 2008

- CURRENT ON-ORBIT DATA CONFIGURATION17 March 2008

- Average # of supports taken
- 13 daily
- 91 weekly

- APT

- HRPT-STX-3*
- LOW FREQ

- LACs

- GACs

**NOAA-18**
**PRIMARY**
**P.M.**

- Average # of supports taken
- 9 daily
- 63 weekly

- Average # of supports taken
-  8 daily
- 55 weekly

- Average # of supports taken
- 10 daily
- 73 weekly

- APT
- (conflicts w/12)

- No APT
- (inoperable)

- APT

- HRPT-STX-2
- (omni)
- MID FREQ

- HRPT- STX-2
- MID FREQ

- HRPT-STX-1*
- HIGH FREQ

- No LACs
- (DOWNLINK CONSTRAINT)

- No LACs

***LACs****
***Reduce requirements by 15 April 08***

- GACs

- GACs

- GACs

**NOAA-15**
**BACKUP A.M.**

**NOAA-16**
**Secondary **
**P.M.**

**NOAA-17**
**Secondary**
**A.M.**

**METOP-A**
**PRIMARY**
**A.M.**

- No APT

- Average # of supports taken:
- 0 daily
- 1/week for proficiency

- GDS

**No M-HRPT**
**Non-operational as of 4 July**

## DRIFT RATES AND EQUATOR CROSSING NODES (ECN) As of June 2008

- 8

**DRIFT RATES AND EQUATOR CROSSING NODES (ECN) As of June 2008**

**STATUS OF****OPERATIONAL SATELLITES****(Continued)**

**Spacecraft**

** **

**Launch Date**

** **

**Equator Crossing Times**

** **

**Drift Rate**

** **

- NOAA

- -

- 16

- SEPT 2000

- 1635 Ascending

- +

- + 4.4 min/month

- NOAA

- -

- 15

- MAY 1998

- 0506 Descending

- -

- -1.5 min/month

- NOAA

- -

- 17

- JUNE 2002

- 0958 Descending

- -1.7 min/month

- NOAA

- -

- 18

- MAY 2005

- 1336 Ascending

-  0.1 min/month

## OSO S/C Priorities by Time

| Timeframe | S/C PRIORITY |
| --- | --- |
|  |  |
|  |  |
| METOP FULLY OPERATIONAL FOR USERS
 | N18≥M02>N15>N16>N17 |

## NSV Development

- Tested the ability to flow NSV data while meeting IJPS data flow requirements
- Use of IJPS “portal” not operationally blessed.  Required NOAA to evaluate separate link into SOCC.  Contracts, planning and implementation of link to be tested in parallel with “proof of concept” was delayed by IJPS and Jason2 activities.
- Final approval and implementation of second portal from OSO management pending completion of high priority, Jason-2 launch activities

## Planned Usage for NSV

- Blind orbit data recovery from NOAA-15 and NOAA-17 on a non-interference basis with NOAA-18.
- NOAA 16 conflicts too often with higher priority N15 and N18 datasets.
- No command capability
- Data recovery would be strictly automated the on-board recorder schedules, any anomaly would result in data loss
- Target date is now late 2008/early 2009 due to operational constraints

## Final thoughts

- NOAA expects to see satellite phasing conflicts between
- N17/MetOp and N16 with N18 and the soon to be launched
- Nprime satellite.
- Blind orbit recovery is going to occur, delays in testing for
- Operational readiness are due to constraints imposed by using
- “someone else’s” operational portal into SOCC.