Terra direct broadcast data outage?

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slwood
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Terra direct broadcast data outage?

by slwood » Sun Mar 10, 2024 11:48 pm America/New_York

Since 2024-03-08 23:11 all Terra passes scheduled for reception at Lauder, New Zealand, appear to have no signal -- is there a known issue with the Terra direct broadcast feed at present? I've seen no announcements recently.

Simon

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kryzhanivsky
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Re: Terra direct broadcast data outage?

by kryzhanivsky » Tue Mar 12, 2024 4:08 am America/New_York

Good afternoon. We have a similar situation. Starting from March 9, 2024, all Terra passes have no reception signal. Eastern European territory

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Re: Terra direct broadcast data outage?

by LP DAAC - dgolon » Tue Mar 12, 2024 9:31 am America/New_York

Hello @slwood and @kryzhanivsky We are looking into this issue and will report back with more information. Thank you- Danielle
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Re: Terra direct broadcast data outage?

by OB.DAAC - SeanBailey » Mon Mar 18, 2024 3:17 pm America/New_York

The following message was sent to the Direct Broadcast community today (18 March 2024):

Terra continues to collect science; however, no Direct Broadcast is available.

Terra is encountering an intermittent solar array power generation issue limiting our ability to continue all science and provide Direct Broadcast continuously. We are continuing to evaluate the spacecraft power generation issue. Will resume Direct Broadcast if power generation returns to normal or may only be able to support limited Direct Broadcast, if any.

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Re: Terra direct broadcast data outage?

by eos_fot » Thu Mar 21, 2024 12:17 pm America/New_York

All,

As of 3/21 the Terra Flight Ops Team (FOT) continues to keep the onboard Terra Direct Broadcast hardware set to Standby mode. We have spent several days reviewing the spacecraft's charging profile and battery temperatures to determine the best path forward. An onboard monitor has been loaded to the spacecraft that would toggle Direct Broadcast from DB mode to standby mode during spacecraft day and vise versa during spacecraft night if we should experience this anomaly again in the future.

We have not yet been given a Go to re-enable Direct Broadcast to DB mode due to the fact that we are currently monitoring the spacecraft batteries after updating the trickle charge rate.

K-band science downlink is and has remained nominal. Updates will be posted as they become available.

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Re: Terra direct broadcast data outage?

by eos_fot » Wed Mar 27, 2024 1:39 pm America/New_York

Terra Direct Broadcast was re-enabled on 3/27 (DOY 87) @ 15:27GMT. The FOT will continue to monitor the spacecraft's power generation and battery charging profile.

slwood
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Re: Terra direct broadcast data outage?

by slwood » Wed Apr 03, 2024 10:36 pm America/New_York

Thanks folks, Terra reception resumed end last week.

S

kryzhanivsky
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Re: Terra direct broadcast data outage?

by kryzhanivsky » Wed May 15, 2024 2:18 am America/New_York

Good afternoon. Starting from May 12, 2024, all Terra passes have no reception signal. Eastern European territory (Ukraine)
Last edited by kryzhanivsky on Thu May 16, 2024 1:38 am America/New_York, edited 1 time in total.

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Re: Terra direct broadcast data outage?

by eos_fot » Tue Jun 04, 2024 2:46 pm America/New_York

The Terra Flight Ops Team was instructed to power off Terra Direct Broadcast due to power and battery temperature trends. The spacecraft. However, the option to resume Terra DB is TBD. The FOT continues to meet with the Mission Director and the spacecraft manufacturer representative to monitor the state of Terra's power and battery trends.

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