SBIR-STTR Award

We propose to adapt angle-only passive ranging methods developed for use by the submarine force to the problem of range estimation for missiles and rockets. Three particular methods will be examined: parallax or triangulation ranging; tracker/filter algorithms; and the relationship between range and the rate of angle change over time. Parallax ranging is an instantaneous method that uses angle measurements from two physically separated sensors. Tracker and filter algorithms use target motion models and measurement error models, to calculate a stochastic estimate of the target state. The instantaneous rate at which the angle to the target changes over time, can be related mathematically to the range to that target. These methods can also be used to estimate maximum range.

Keywords:
Passive Range Estimation, Angle-Only, Bearings-Only, Tracking

We propose to adapt angle-only passive ranging methods developed for submarine warfare to the problem of range estimation for missiles using current electro-optical sensor systems in order to provide fire control quality tracking at or near threat burnout to support early intercept. Three methods will be developed: parallax or triangulation ranging; angle rate ranging; and tracker/filter algorithms. Parallax ranging is an instantaneous method that uses angle measurements from two physically separated sensors. The instantaneous rate at which the angle to the target changes over time can be related mathematically to the range to the target. These methods can also be used to estimate maximum range. Tracker and filter algorithms use target and sensor platform motion models and sensor measurement error models to calculate a stochastic estimate of the target state. Real and synthetic data sets will be used to evaluate passive ranging and tracking system performance.

Keywords:
Passive Range Estimation, Angle-Only, Tracking, Monocular Passive Ranging, Triangulation Ranging, Parallax Ranging