Burst signal

For special applications such as air coupled testing a special programmable transmitter board was developed. This transmitter generates rectangular and burst signals, which increase the acoustical power in an optimized frequency range, and provides a superior signal-to-noise ratio. 

Burst signals (supemovae) have been the primary target for the resonant mass detectors. The minimum detectable perturbation of the metric sensor caused by a burst of GW of duration r is ... 

Figure 6.3. Schematic of interference fringe region, measurement volume, Doppler burst signals, and effects of particle size on signal modulation.

The principal method of TS detection is based on the registration of the number of bursts (or waves) per second of the electrical signals. The electronic components include also a circuit to register the primary frequency components in the TS burst signal. The occurrence of the individual frequencies, is stored and recorded as a distribution versus frequency curve. The output curves are a scan of the TS activity versus temperature and the pulse height analyzer output that gives the density distribution per 1°C of TS activity. 

Czarske, J., Hock, F. and Muller, H., Quadrature demodulation - A new LDV burst signal frequency estimator. Proc. SPIE 2052, 79-86 (1993)... 

The color burst signal is normally included only during color transmission and is the color sync portion of the horizontal blanking interval. It provides a fixed reference of constant phase and amplitude to the receiver to enable it to decode correctly the varying phase and amplitude of the color information on the Hne that follows. 

The phase difference (shift) between a pair of Doppler burst signals in the PDA optical arrangement (°)... 

From the point of view of the signal they produce, the sources can be classified into three main types burst sources, with very short duration, i.e., broadband in frequency narrowband sources, which are periodic or quasi-peri odic and stochastic backgrounds. Catastrophic events, such as supernova explosions or coalescence of binary systems, produce burst signals. Rotating asymmetric neutron stars or binary systems far from coalescence are narrowband sources. The addition of several weak sources produces a stochastic background. 

During the scanning of the display field, the properly timed burst signals are required to draw the pattern. One of these beam intensifying signals makes the picture of the spectrum within the graphic field. It is produced inside the data point video section (sheet 2 and 3 of the DISPLAY BOARD documentation). Start at sheet 2 and find the local bus lines ADO to AD7. 

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