THE NOLC G-LINE DYNAMIC RANGE SIMULATOR
Abstract
The NOLC G-line dynamic range simulator employs the principle of the surface-wave transmission line for measuring the dynamic range response of small, short-range radar devices. Energy from the transmitter of the device being tested is transmitted through a series of RF components to a launching horn, which launches the energy along the G-line. A removable reflector returns the energy along the G-line to the horn and back through the RF components to the receiver of the device under test. Reflector travel is accomplished by a power-drive system, which includes a precise method of controlling the measuring reflector travel. The return signal is applied to the vertical amplifier of an oscilloscope with the horizontal sweep time set to equal the travel time of the reflector. The trace is photographed by a polaroid camera set for a time exposure, and the envelope thus produced shows the sensitivity of the device under test as a function of range. The facility will accommodate ranges to 2000 ft. Frequencies from the UHF region to the millimeter wave band can be propagated over the line by using the proper horn and reflector sizes. The G-line has much lower attenuation than either waveguide or coaxial cable. A listing of NOLC drawings covering construction details is given and the method of installation of the long G-line span is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1962
- Accession Number
- AD0289833
Entities
People
- E.w.t. Des Marets