Accession Number:

AD0669241

Title:

RADIOMETRIC TRACKING OF SMALL ISLANDS.

Descriptive Note:

Memorandum rept.,

Corporate Author:

BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s):

• Richer,Kenneth A.

Report Date:

1968-02-01

Pagination or Media Count:

41.0

Abstract:

Radiometric measurements have been made at 35 GHz to simulate the tracking of a small island by a satellite-borne system. Both absolute temperature and tracking error measurements were made. The simulation was made using a portable tower to attain altitude and microwave absorbing material on a support in the water off Spesutie Island at Aberdeen Proving Ground as a target. It was concluded that with a 10 sec time constant, conical scan tracking with a 10 in. diameter antenna could achieve pointing accuracies of better than 5 mrad of angle if great care were taken to initially align and calibrate the mechanical, electrical, and spatial axes of the system. Author

Descriptors:

• (*MAPPING
• SCIENTIFIC SATELLITES)
• STABILIZED PLATFORMS
• ISLANDS
• MILLIMETER WAVES
• RADIOMETERS
• SIMULATION
• CALIBRATION
• ALIGNMENT
• SPECTRUM SIGNATURES

Subject Categories:

• Cartography and Aerial Photography
• Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE