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Advanced study of video signal processing in low signal to noise environments (Document No: 19730010457)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Henry, R. Carden, F. |
| Copyright Year | 1972 |
| Description | A nonlinear analysis of a multifilter phase-lockloop (MPLL) by using the method of harmonic balance is presented. The particular MPLL considered has a low-pass filter and a band-pass filter in parallel. An analytic expression for the relationship between the input signal phase deviation and the phase error is determined for sinusoidal FM in the absence of noise. The expression is used to determine bounds on the proper operating region for the MPLL and to investigate the jump phenomenon previously observed. From these results the proper modulation index, modulating frequency, etc. used for the design of a MPLL are determined. Data for the loop unlock boundary obtained from the theoretical expression are compared to data obtained from analog computer simulations of the MPLL. |
| File Size | 746090 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730010457 |
| Archival Resource Key | ark:/13960/t0101xr5x |
| Language | English |
| Publisher Date | 1972-12-21 |
| Access Restriction | Open |
| Subject Keyword | Video Communication Phase Locked Systems Signal To Noise Ratios Environmental Tests Signal Processing Analog Computers Sine Waves Computerized Simulation Nonlinear Programming Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
