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Costas loop lock detection in the advanced receiver
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mileant, A. Hinedi, S. |
| Copyright Year | 1989 |
| Description | The advanced receiver currently being developed uses a Costas digital loop to demodulate the subcarrier. Previous analyses of lock detector algorithms for Costas loops have ignored the effects of the inherent correlation between the samples of the phase-error process. Accounting for this correlation is necessary to achieve the desired lock-detection probability for a given false-alarm rate. Both analysis and simulations are used to quantify the effects of phase correlation on lock detection for the square-law and the absolute-value type detectors. Results are obtained which depict the lock-detection probability as a function of loop signal-to-noise ratio for a given false-alarm rate. The mathematical model and computer simulation show that the square-law detector experiences less degradation due to phase jitter than the absolute-value detector and that the degradation in detector signal-to-noise ratio is more pronounced for square-wave than for sine-wave signals. |
| File Size | 695407 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900010125 |
| Archival Resource Key | ark:/13960/t4km46b77 |
| Language | English |
| Publisher Date | 1989-11-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Phase Shift Keying Digital Systems Vibration Algorithms Signal To Noise Ratios Symbols False Alarms Signal Processing Carrier Transport Solid State Mathematical Models Computerized Simulation Signal Detection Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
