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Old 05-04-2013, 01:44 AM   #16
MattBaker
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Spaceflight Now says so at least:
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Originally Posted by Spaceflight Now
 SATURDAY, MAY 4, 2013
0140 GMT (9:40 p.m. EDT Fri.)
SRUB. Tonight's Vega launch has been postponed due to unfavorable high-altitude winds at the launch site. We're waiting on word on when Arianespace will make another launch attempt.
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Old 05-04-2013, 02:03 AM   #17
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Arianespace press release:
Arianespace Flight VV02: Vega – Proba-V, VNREDSat-1 and ESTCube-1; Launch postponed

Kourou, May 3, 2013

The weather conditions being unfavourable over the Guiana Space Center in Kourou, the European Space Agency (ESA) and Arianespace have decided to postpone VV02. VV02 will place into orbit the Proba-V, VNREDSat-1 and ESTCube-1 satellites.

Another launch date will be decided depending on the evolution of the weather conditions in Kourou.



Arianespace: Unfavorable high-altitude winds postpone Vega’s mission from the Spaceport with a trio of satellites
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Old 05-05-2013, 04:00 AM   #18
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For some reason no updates were given, but all sources at CSG are now reporting the earliest time another try will be done is on Tuesday morning GMT (i.e. just under 2 days from now).
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Old 05-06-2013, 12:56 PM   #19
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Spaceflight Now: Vega rocket set for launch tonight after weather delay

Arianespace says there will be another attempt to launch Europe's second Vega rocket tonight after a three-day delay to wait out unfavorable winds aloft. Liftoff from French Guiana is set for 0206 GMT Tuesday (10:06 p.m. EDT Monday).

An Arianespace spokesperson says there will be another Vega launch attempt this evening after the flight was delayed from Friday to wait out brisk easterly high-altitude winds.

The winds have died down enough for officials to conclude there is a chance the conditions will be favorable at launch time tonight, which is set for 0206:31 GMT Tuesday (10:06:31 p.m. EDT Monday).
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Old 05-06-2013, 02:23 PM   #20
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4:06 am again heure de Paris. Man...
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Old 05-07-2013, 01:36 AM   #21
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Launch in 30 minutes. No problems with the countdown so far.
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Old 05-07-2013, 01:45 AM   #22
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Live coverage is starting: http://www.videocorner.tv/videocorne..._flv/index.php
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Old 05-07-2013, 02:06 AM   #23
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Liftoff!

ESA:
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Old 05-07-2013, 03:07 AM   #24
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Proba-V is now in its planned orbit (820 * 820 km * 98.7°). Two more burns coming up to transfer the two other satellites to a 665 * 665 km * 98.1° orbit.
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Old 05-07-2013, 04:32 AM   #25
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All satellites have been separated!

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Old 05-07-2013, 06:09 AM   #26
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Processing Highlights of Vega Flight 2 with Proba-V

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Old 05-07-2013, 06:17 AM   #27
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I think we need more small satellites *starts meshing program*
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Old 05-07-2013, 11:02 AM   #29
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Eerie to see a solid-powered rocket lifting off in pretty big showers.....

























http://spaceinimages.esa.int/Images/2013/05/
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Old 05-08-2015, 06:51 PM   #30
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Default Proba-V's satellite map shows jet signals worldwide

15,000 planes, 1 image: Stunning satellite map shows jet signals worldwide

7 May 2015

As ESA’s Proba-V works quietly on its main task of monitoring vegetation growth across Earth, the minisatellite is also picking up something from a little higher: signals from thousands of aircraft.

Launched two years ago today, Proba-V has picked up upwards of 25 million positions from more than 15 000 separate aircraft.

This is a technical world-first, demonstrating the feasibility of follow-on orbital constellations now being readied for operational aircraft monitoring.

“We stay operational 24 hours per day, seven days per week, apart from occasional maintenance or upgrading,” explains Toni Delovski of the DLR German Aerospace Center, overseeing the experiment.

“We’ve shown that detection of aircraft can work from space with no showstoppers, despite the fact that these signals were never designed to be picked up from so far away.

“In fact, the signals are beamed sideways from their host aircraft rather than omidirectionally, making them harder to detect from orbit.

“With a single satellite, our detection footprint is relatively small – about 1500 x 750 km – but for an operational service a constellation of satellites is envisaged to provide worldwide coverage.”

Smaller than a cubic metre, Proba-V is nonetheless carrying several technology experiments as well as its main wide-swath Vegetation camera, which tracks changes in plant growth across the entire planet every two days.

DLR and Luxembourg’s SES company added an experiment to detect Automatic Dependent Surveillance Broadcast (ADS-B) aircraft signals from space.

These signals are regularly broadcast from aircraft, giving flight information such as speed, position and altitude. All aircraft entering European airspace are envisaged to carry ADS-B in the coming years.

DLR contributed the receiver carried aboard Proba-V, while SES has provided the experiment's ground segment, encompassing the processing needed to decode the signals, including compensating for factors such as frequency-shifting caused by the motion of Proba-V relative to the aircraft.

“The focus of the experiment is on the large parts of the world without radar and less dense air traffic,” adds Toni.

“In the event, we have also had very good detections in the much more densely trafficked airspace of the US, Western Europe and Southeast Asia.”

In those parts of the world with radar coverage, air traffic controllers can shepherd aircraft very precisely, with separation distances down to 5.5–9 km.

However in the rest of the world, such as over the Atlantic, minimum separation distance goes up by a factor of 10, to 93 km.

Space-based ADS-B offers a method of safely reducing separation distances everywhere, increasing global air traffic capacity while improving safety.

DLR and SES are working with national air navigation service providers in Australia, Iceland, Portugal and Namibia to check Proba-V observations against the facts on the ground.

“We are still working to improve the system, with ongoing software upgrades, and investigating anomalies,” Toni adds. “Right now, some makes of aircraft are more easily detected than others, which typically comes down to the age and make of their ADS-B systems.”

An operational ADS-B detection system is being hosted on the IridumNEXT constellation, while SES is working with ESA to determine the market for a European version.

“If ADS-B from space is going to enter use on an operational, internationally certified basis, then we will certainly need a minimum of two systems,” Toni concludes.

“We couldn’t have a situation where the sole service suddenly goes down, and aircraft in the middle of the ocean need to spread out.”



Proba-V satellite


DOWNLOAD HI-RES Proba-V detecting aircraft


http://www.esa.int/Our_Activities/Sp...fic_from_space
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