Detection of molecular infrared spectra

Total energy distribution measurements of field emitted electrons detect molecular infrared spectra of adsorbed molecules. Tunneling electron gives up energy to excite various modes of adsorbed molecule. These electrons, when energy-analyzed, show up on the collector and exhibit the spectra of various modes excited by tunneling electrons

A comparison of frame synchronization methods

Different methods are considered for frame synchronization of a concatenated block code/Viterbi link. Synchronization after Viterbi decoding, synchronization before Viterbi decoding based on hard-quantized channel symbols are all compared. For each scheme, the probability under certain conditions of true detection of sync within four 10,000 bit frames is tabulated

Frame synchronization for the Galileo code

Results are reported on the performance of the Deep Space Network's frame synchronizer for the (15,1/4) convolutional code after Viterbi decoding. The threshold is found that optimizes the probability of acquiring true sync within four frames using a strategy that requires next frame verification

Effects of quantization on symbol stream combining in a convolutionally coded system

Symbol stream combining has been proposed as a method for arraying signals at different antennas. If the received symbol streams are recorded on tape, it is desirable to limit the required storage without significantly affecting the performance. It is shown that 4-bit quantized symbols introduce an E sub b/N sub o penalty of only 0.05 dB

Data retrieval system provides unlimited hardware design information

Data is input to magnetic tape on a single format card that specifies the system, location, and component, the test point identification number, the operators initial, the date, a data code, and the data itself. This method is efficient for large volume data storage and retrieval, and permits output variations without continuous program modifications

Investigation of electron emission characteristics of low work function surfaces Quarterly progress report no. 3, 1 Apr. - 30 Jun. 1965

Electron emission characteristics of low work function surfaces - total energy distributions for five crystallographic directions of tungste

Total energy distribution measurements of field emitted electrons Final report, 15 Nov. 1968 - 15 Dec. 1969

Total energy distribution of field emitted electrons with respect to adsorption effect

Investigation of electron emission characteristics of low work function surfaces quarterly progress report no. 2, 28 dec. 1964 - 31 mar. 1965

Quality and stability of electron emission characteristics of low work function surfaces - tungste

Total Energy Distribution Measurements of Field Emitted Electrons Progress Report, 14 Feb. - 14 May 1968

Potential energy analyzer tube for measuring field emitted electrons from coated tungsten and molybdenum surface

Total energy distribution measurements of field emitted electrons Progress report, 15 May - 15 Sep. 1969

Fermi surfaces, Brillouin zones, and field energy distributions in band structures of rheniu