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- J. Stensby
- 2006 Proceeding of the Thirty-Eighth Southeastern…
- 2006

Consider a phase-lock loop (PLL) that is phase locked to a constant frequency reference. Under this condition, the PLL pull-out frequency is defined as the largest input reference frequency step that can be applied without the PLL slipping one or more cycles. The application of an input reference frequency step larger (alternatively, smaller) than the… (More)

- J. Stensby
- 2008 40th Southeastern Symposium on System Theory…
- 2008

For a second-order PLL with a lead-lag (i.e., imperfect integrator) loop filter, the pull-in range Omega<sub>p</sub> and the half-plane pull-in range Omega<sub>2</sub> are important parameters. Both parameters play key roles in determining if phase lock will (or can) occur once the loop is closed. For values of loop detuning omega<sub>Delta</sub> that lie… (More)

- J. Stensby
- Proceedings of the 2012 44th Southeastern…
- 2012

To aid the acquisition process in an out-of-lock PLL, an external sweep voltage can be applied to the VCO. The goal is to sweep the system state towards a stable lock point. For a second-order loop containing a perfect integrator loop filter, there is a maximum VCO sweep rate magnitude, denoted as R<sub>m</sub> rad/sec<sup>2</sup>, for which phase lock is… (More)

- Je Walls, Mayumi Greene, J. Stensby
- [1988] Proceedings. The Twentieth Southeastern…
- 1988

A recently proposed method of reducing target glint errors in radar systems using extended Kalman filtering is further enhanced with the development of a discrete target model and discrete Kalman filter (DKF) that includes clutter effects. Simulation results demonstrating the DKF are presented, and the limits of the usefulness of this method are… (More)

- J. Stensby
- [1988] Proceedings. The Twentieth Southeastern…
- 1988

Results are given on the phenomenon of data-related false lock in a Costas loop which contains a perfect integrator in its loop filter. The input carrier to the loop is assumed to be biphase-modulated with a T' periodic binary sequence constructed from Manchester symbols; there are p symbols per period. As a result, the false locked loop is described by a… (More)

- J. Upatnieks, J O Abshier, Charlotte R. Christensen, J. Stensby
- Applied optics
- 1990

An interferometrically generated off-axis holographic optical element images a laser diode light source to a 3 x 5 point array through 10 cm of glass. The element also reduces the elliptical beam cross section from 3:1 to 1.5:1.

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