這是福爾摩沙衛星三號計畫的臺灣科學資料分析中心網站，可以由此得到最先進的美方的資料分析中心（CDAAC）資料。
中央氣象局與國家太空中心協議，由中央氣象局配合福爾摩沙衛星三號計畫的進度，參與規劃及建置其中的臺灣科學資料分析中心(Taiwan Analysis Center for COSMIC；TACC)的工作。依據系統作業需求研討結論，未來的臺灣科學資料分析中心其作業功能需類同於美方的資料分析中心(COSMIC Data Analysis and Archive Center；CDAAC)，且臺灣科學資料分析中心預定將設置於中央氣象局進行即時的資料分析作業，以產製相關的大氣垂直分布反演資料，供後端氣象系統進行作業應用。
星期三, 6月 14, 2006
Formosat-3/COSMIC US website
在上述網佔，可以看到 FORMOSAT-3 的軌道位置及近況。如下；
June 9, 2006
Orbit raising is progressing with successful test burns. COSMIC satellites all received a new load of software for the GPS RO payload over the past couple of weeks which allows us to start open loop tracking. TIP payload is operating 24 hours a day. TBB has started testing on all frequencies over various earth receiver chains. All spacecraft appear to be healthy.
Posted by Dave Ector and the CDAAC Team
May 30, 2006
All 6 spacecraft are healthy and functioning normally. Spacecraft attitude has generally been good with spacecraft power margins better than expected. Payloads are being operated with the GPS payload on half time and TIP on full time. A new version of GPS payload software is in the process of being loaded to all 6 satellites. TBB is still going through its checkout process, operating occasionally. The constellation orbit maneuvering has been delayed due to a fairly long learning curve in calibrating burn profiles, but significant progress has been made over the past few days to prepare one of the satellites for its first maneuver.
Posted by Dave Ector
May 24, 2006
Attitude continues to look good for all satellites. For most of the week the GOX was commanded to be on for 24 hours. This caused some data buffer overrun issues for the GOX data transmitted to the ground stations and most of the data was not translated due to parsing errors. To correct this problem the GOX will be commanded to be on for 6 hours and other methods of reducing the data volume are being investigated. The limitation in the amount of observation data is due to the tight spacing of the SC in the initial phase, once the SC are in an operation orbit they will download data on a more frequent schedule.
We have received good POD and OCC data with attitude stabilized, and we have been able to perform good orbit determination. We have been getting good profiles down to about 6 KM. The truncation of the profiles is due to known issues with the FM firmware for OL tracking. Version 4.2 should be delivered in the next few days. The newer GPS firmware will fix bugs related to OL mode and we anticipate getting good open loop data once this firmware has been uploaded to the spacecraft.
We have been using predicted orbits for ionospheric processing. Currently we are in the process of calibrating DCBs for the spacecraft receivers. It is anticipated that COSMIC data will be used in a space weather campaign coming up at the end of June.
We continue to look at TBB - GOX interference test data.
CDAAC Computer systems are performing well and there have been no hardware related failures. Processing loads are becoming high on some of the web service servers and we may add an additional server for handling data requests.
There was a hard drive failure in one of the BitGrabber systems in New Zeland and a replacement drive has been shipped.
Posted by the CDAAC Team
May 19, 2006
Attitude is now looking good for all s/c. This is expected to help POD. We are seeing reasonable SNRs on all antennas. FM4 started looking reasonable again on day 139.
FB 4.1 test upload was done to FM3. Once we confirm this worked we will give the green light for uploading FB 4.2.
JPL is working on FB 4.2 - several bugs that affect the OL model are fixed. There may be some more bugs. However we decided to upload FB 4.2 as soon as possible to start tracking near the surface while the satellites are still in low orbits.
The space weather community is already planning a COSMIC test period.
At this point we have processed over 1000 COSMIC occultations (to atmPhs level) and they are coming in faster and faster.
Posted by Chris Rocken
May 16, 2006 CDAAC is planning on opening up access to users as soon as remaining satellite issues have been cleared up. We anticipate this will occur in the next 2-3 weeks.
Posted by Doug Hunt
May 15, 2006 All 6 spacecraft are healthy and flying as a cluster approximately 900 km from end to end at 515 km altitude. At this low altitude, the spacecraft's attitude is not as stable as it will be at the final orbit of 800 km, so payloads are only being operated part time to save power. A flight software load is being completed over the next 2 days which is expected to significantly improve attitude stability, and should allow for longer duration payload operations. Orbit raising is planned to start during this next week, with the first spacecraft being boosted to the final orbit altitude of 800 km.
Posted by Dave Ector
April 15, 2006 The COSMIC constellation of six satellites was launched successfully from Vandenberg Air Force Base in California at 6:40 p.m. PDT (9:40 p.m. EDT) on Friday, April 14, 2006. Ground stations have received signals from all six satellites.
June 9, 2006
Orbit raising is progressing with successful test burns. COSMIC satellites all received a new load of software for the GPS RO payload over the past couple of weeks which allows us to start open loop tracking. TIP payload is operating 24 hours a day. TBB has started testing on all frequencies over various earth receiver chains. All spacecraft appear to be healthy.
Posted by Dave Ector and the CDAAC Team
May 30, 2006
All 6 spacecraft are healthy and functioning normally. Spacecraft attitude has generally been good with spacecraft power margins better than expected. Payloads are being operated with the GPS payload on half time and TIP on full time. A new version of GPS payload software is in the process of being loaded to all 6 satellites. TBB is still going through its checkout process, operating occasionally. The constellation orbit maneuvering has been delayed due to a fairly long learning curve in calibrating burn profiles, but significant progress has been made over the past few days to prepare one of the satellites for its first maneuver.
Posted by Dave Ector
May 24, 2006
Attitude continues to look good for all satellites. For most of the week the GOX was commanded to be on for 24 hours. This caused some data buffer overrun issues for the GOX data transmitted to the ground stations and most of the data was not translated due to parsing errors. To correct this problem the GOX will be commanded to be on for 6 hours and other methods of reducing the data volume are being investigated. The limitation in the amount of observation data is due to the tight spacing of the SC in the initial phase, once the SC are in an operation orbit they will download data on a more frequent schedule.
We have received good POD and OCC data with attitude stabilized, and we have been able to perform good orbit determination. We have been getting good profiles down to about 6 KM. The truncation of the profiles is due to known issues with the FM firmware for OL tracking. Version 4.2 should be delivered in the next few days. The newer GPS firmware will fix bugs related to OL mode and we anticipate getting good open loop data once this firmware has been uploaded to the spacecraft.
We have been using predicted orbits for ionospheric processing. Currently we are in the process of calibrating DCBs for the spacecraft receivers. It is anticipated that COSMIC data will be used in a space weather campaign coming up at the end of June.
We continue to look at TBB - GOX interference test data.
CDAAC Computer systems are performing well and there have been no hardware related failures. Processing loads are becoming high on some of the web service servers and we may add an additional server for handling data requests.
There was a hard drive failure in one of the BitGrabber systems in New Zeland and a replacement drive has been shipped.
Posted by the CDAAC Team
May 19, 2006
Attitude is now looking good for all s/c. This is expected to help POD. We are seeing reasonable SNRs on all antennas. FM4 started looking reasonable again on day 139.
FB 4.1 test upload was done to FM3. Once we confirm this worked we will give the green light for uploading FB 4.2.
JPL is working on FB 4.2 - several bugs that affect the OL model are fixed. There may be some more bugs. However we decided to upload FB 4.2 as soon as possible to start tracking near the surface while the satellites are still in low orbits.
The space weather community is already planning a COSMIC test period.
At this point we have processed over 1000 COSMIC occultations (to atmPhs level) and they are coming in faster and faster.
Posted by Chris Rocken
May 16, 2006 CDAAC is planning on opening up access to users as soon as remaining satellite issues have been cleared up. We anticipate this will occur in the next 2-3 weeks.
Posted by Doug Hunt
May 15, 2006 All 6 spacecraft are healthy and flying as a cluster approximately 900 km from end to end at 515 km altitude. At this low altitude, the spacecraft's attitude is not as stable as it will be at the final orbit of 800 km, so payloads are only being operated part time to save power. A flight software load is being completed over the next 2 days which is expected to significantly improve attitude stability, and should allow for longer duration payload operations. Orbit raising is planned to start during this next week, with the first spacecraft being boosted to the final orbit altitude of 800 km.
Posted by Dave Ector
April 15, 2006 The COSMIC constellation of six satellites was launched successfully from Vandenberg Air Force Base in California at 6:40 p.m. PDT (9:40 p.m. EDT) on Friday, April 14, 2006. Ground stations have received signals from all six satellites.
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