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ANNA 1B

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Mission type  Geodesic research
SATCAT №  00446
Launch date  31 October 1962
Inclination  50.1°
Launch mass  161 kg
COSPAR ID  1962-060A
Rocket  Thor-DM21 Able Star
Inclination  50.1°
Period  1.8 hours
Launch mass  161 kg
ANNA 1B httpsuploadwikimediaorgwikipediacommonsthu
Operator  Department of Defense / NASA
Manufacturer  Applied Physics Laboratory
Similar  Kosmos 4, Kosmos 2, Venera 2MV‑1 N, Alouette 1

ANNA 1B (acronym for "Army, Navy, NASA, Air Force") was a United States satellite launched on October 31, 1962 from Cape Canaveral, by rocket Thor.

Features

ANNA 1B's predecessor launched on May 10, 1962, but failed to reach orbit.

ANNA 1B was a US Navy geodetic satellite launched from Cape Canaveral by a Thor Able Star rocket. The mission consists of ANNA serving as a reference for making precise geodetic surveys, allowing measurement of the force and direction of the gravitational field of the Earth, locating the middle of land masses and establishing surface positions.

ANNA 1B was spherically shaped with a diameter of 0.91 meters and a weight of 161 kg. It was powered by a band of solar cells located around its equator supported by nickel-cadmium batteries. A communications antenna was wrapped around the spiral surface of the satellite.

The ship's instrumentation included optical systems, radio location, and Doppler radar. The optical system consists of a high intensity beacon which transmits a series of five flashes with a period of 5.6 seconds. This allows the system to accurately measure land masses by satellite photographs. The Doppler radar system can also be programmed from the ground control station. The optical system provides Doppler radar positioning with an accuracy of 20 meters or less.

References

ANNA 1B Wikipedia


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