This Day On The Street
Continue to site
ADVERTISEMENT
This account is pending registration confirmation. Please click on the link within the confirmation email previously sent you to complete registration.
Need a new registration confirmation email? Click here

Lockheed Martin Marks 30th Anniversary Of First Search And Rescue Hosted Payload On U.S. Weather Satellites

Under the Cospas-Sarsat 1979 agreement, France provided the Search and Rescue Processor, developed by the Center for National D'Etudes Spatiales (CNES). Canada's Department of National Defence developed the Search and Rescue Repeater. The United States provided the Search and Rescue Receive Antenna – designed and built by the East Windsor team, which also performed the integration, test and fielding of the system that also needed to work in conjunction with the Soviet Union's Cospas satellites. In the U.S. the SARSAT system was developed by NASA. Once it became fully functional, its operation was turned over to NOAA where it remains today.



The Cospas-Sarsat system swings into action when a distress beacon is activated in a life-threatening emergency. The beacon is picked up by the satellites equipped with the SARSAT hardware. Satellites downlink the distress data to ground stations and mission control centers that distribute it to rescue coordination centers that dispatch personnel to effect a rescue. Typical rescue beacon radios transmit a strong 5-watt signal once every 50 seconds. Most beacons also include a GPS receiver so they can report a precise latitude/longitude location. Aircraft Emergency Locator Transmitters (ELTs) are automatically activated by g-force switches that detect sudden deceleration during a crash, while maritime Emergency Position Indicating Radio Beacons (EPIRBs) are normally activated by contact with seawater. Personal Locator Beacons (PLBs) are activated manually.

Initially, SARSAT hardware was installed only on low earth orbit polar-orbiting satellites, like the Advanced TIROS-N series. These orbit at about 500 miles in altitude, making a single revolution each 100 minutes, with sensors viewing a different swath of the planet on each pass as the Earth turns beneath them. When a distress beacon is detected, its location can be computed based on the Doppler shift of the beacon signal as the satellite passes overhead. Satellites in polar orbit provide emergency beacon users with global coverage (including the polar regions).

2 of 4

Check Out Our Best Services for Investors

Action Alerts PLUS

Portfolio Manager Jim Cramer and Director of Research Jack Mohr reveal their investment tactics while giving advanced notice before every trade.

Product Features:
  • $2.5+ million portfolio
  • Large-cap and dividend focus
  • Intraday trade alerts from Cramer
Quant Ratings

Access the tool that DOMINATES the Russell 2000 and the S&P 500.

Product Features:
  • Buy, hold, or sell recommendations for over 4,300 stocks
  • Unlimited research reports on your favorite stocks
  • A custom stock screener
Stocks Under $10

David Peltier uncovers low dollar stocks with serious upside potential that are flying under Wall Street's radar.

Product Features:
  • Model portfolio
  • Stocks trading below $10
  • Intraday trade alerts
14-Days Free
Only $9.95
14-Days Free
Dividend Stock Advisor

David Peltier identifies the best of breed dividend stocks that will pay a reliable AND significant income stream.

Product Features:
  • Diversified model portfolio of dividend stocks
  • Updates with exact steps to take - BUY, HOLD, SELL
Trifecta Stocks

Every recommendation goes through 3 layers of intense scrutiny—quantitative, fundamental and technical analysis—to maximize profit potential and minimize risk.

Product Features:
  • Model Portfolio
  • Intra Day Trade alerts
  • Access to Quant Ratings
Options Profits

Our options trading pros provide over 100 monthly option trading ideas and strategies to help you become a well-seasoned trader.

Product Features:
  • Actionable options commentary and news
  • Real-time trading community
SYM TRADE IT LAST %CHG

Markets

DOW 18,011.94 -28.43 -0.16%
S&P 500 2,109.60 -2.13 -0.10%
NASDAQ 5,076.5240 -6.4050 -0.13%

Partners Compare Online Brokers

Free Reports

Top Rated Stocks Top Rated Funds Top Rated ETFs