Moffett Field dual horn Radar ASR-9 (AN/GPN-30) Airport Surveillance Radar
Moffett Field dual horn Radar - ASR-9 (AN/GPN-30) Airport surveillance Radar antenna near Sunnyvale Water treatment Facility.
A View of Mt. Hamilton observatory in the East & 49rs new Stadium.
US Federal Aviation Administration
http://en.wikipedia.org/wiki/Airport_surveillance_radar
Airport Surveillance Radar is beginning to be supplemented by ADS-B Automatic dependent surveillance-broadcast in the US and other parts of the world. As of Spring 2011
http://www.faa.gov/air_traffic/technology/asr-11/
Primary and Secondary Surveillance Radar
The ASR-11 system consists of two integrated electronic subsystems: primary surveillance radar and secondary surveillance radar.
How it works
The primary surveillance radar uses a continually rotating antenna mounted on a tower to transmit electromagnetic waves that reflect, or backscatter, from the surface of aircraft up to 60 miles from the radar. The radar system measures the time required for a radar echo to return and the direction of the signal. From this, the system can then measure the distance of the aircraft from the radar antenna and the azimuth, or direction, of the aircraft in relation to the antenna. The primary radar also provides data on six levels of rainfall intensity. The primary radar operates in the range of 2700 to 2900 MHz. The transmitter generates a peak effective power of 25 kW and an average power of 2.1 kW. The average power density of the ASR-11 signal decreases with distance from the antenna. At distances of more than 43 feet from the antenna, the power density of the ASR-11 signal falls below the maximum permissible exposure levels established by the Federal Communications Commission.
The secondary radar uses a second radar antenna attached to the top of the primary radar antenna to transmit and receive area aircraft data for barometric altitude, identification code, and emergency conditions. Military, commercial, and some general aviation aircraft have transponders that automatically respond to a signal from the secondary radar by reporting an identification code and altitude. The air traffic control uses this system to verify the location of aircraft within a 60-mile radius of the radar site. The beacon radar also provides rapid identification of aircraft in distress. The secondary radar operates in the range of 1030 to 1090 MHz. Transmitting power ranges from 160 to 1500 watts.
More info at:
http://www2.tsc.com/sets/_3SSS.htm
http://www2.tsc.com/sets/_3GCNSS.htm
http://en.wikipedia.org/wiki/Parabolic_antenna
TilTul http://tiltul.com LinksYouWantToRemember
CIMG1779 Radar near Sunnyvale Water treatment.MOV
Видео Moffett Field dual horn Radar ASR-9 (AN/GPN-30) Airport Surveillance Radar канала MultiBrowsers
A View of Mt. Hamilton observatory in the East & 49rs new Stadium.
US Federal Aviation Administration
http://en.wikipedia.org/wiki/Airport_surveillance_radar
Airport Surveillance Radar is beginning to be supplemented by ADS-B Automatic dependent surveillance-broadcast in the US and other parts of the world. As of Spring 2011
http://www.faa.gov/air_traffic/technology/asr-11/
Primary and Secondary Surveillance Radar
The ASR-11 system consists of two integrated electronic subsystems: primary surveillance radar and secondary surveillance radar.
How it works
The primary surveillance radar uses a continually rotating antenna mounted on a tower to transmit electromagnetic waves that reflect, or backscatter, from the surface of aircraft up to 60 miles from the radar. The radar system measures the time required for a radar echo to return and the direction of the signal. From this, the system can then measure the distance of the aircraft from the radar antenna and the azimuth, or direction, of the aircraft in relation to the antenna. The primary radar also provides data on six levels of rainfall intensity. The primary radar operates in the range of 2700 to 2900 MHz. The transmitter generates a peak effective power of 25 kW and an average power of 2.1 kW. The average power density of the ASR-11 signal decreases with distance from the antenna. At distances of more than 43 feet from the antenna, the power density of the ASR-11 signal falls below the maximum permissible exposure levels established by the Federal Communications Commission.
The secondary radar uses a second radar antenna attached to the top of the primary radar antenna to transmit and receive area aircraft data for barometric altitude, identification code, and emergency conditions. Military, commercial, and some general aviation aircraft have transponders that automatically respond to a signal from the secondary radar by reporting an identification code and altitude. The air traffic control uses this system to verify the location of aircraft within a 60-mile radius of the radar site. The beacon radar also provides rapid identification of aircraft in distress. The secondary radar operates in the range of 1030 to 1090 MHz. Transmitting power ranges from 160 to 1500 watts.
More info at:
http://www2.tsc.com/sets/_3SSS.htm
http://www2.tsc.com/sets/_3GCNSS.htm
http://en.wikipedia.org/wiki/Parabolic_antenna
TilTul http://tiltul.com LinksYouWantToRemember
CIMG1779 Radar near Sunnyvale Water treatment.MOV
Видео Moffett Field dual horn Radar ASR-9 (AN/GPN-30) Airport Surveillance Radar канала MultiBrowsers
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