Abstract: Ladar systems are provided. An exemplary ladar system includes a waveform generator for generating an arbitrary waveform, a laser for transmitting a modulated light signal toward a target, and a Doppler tracking loop for tracking the Doppler frequency shift between the transmitted light signal and a received reflected light signal.

Abstract: Ladar systems are provided. An exemplary ladar system includes a waveform generator for generating an arbitrary waveform, a laser for transmitting a modulated light signal toward a target, and a Doppler tracking loop for tracking the Doppler frequency shift between the transmitted light signal and a received reflected light signal.

Abstract: A system and method for performing high-resolution imagery of a target are provided. One embodiment is a method of performing high-resolution imagery of a target comprising: generating a chirped waveform that modulates a light signal transmitted toward a target for performing active LADAR of the target; generating a low-frequency local oscillator waveform for performing active imaging; and simultaneously performing passive imaging and active LADAR.

Abstract: A system, called the Laser Aim Scoring System, and method for automatically scoring gunner training sessions for simulated laser-guided missile, target engagements using the laser designator without the need for training or tactical rounds are disclosed. In the disclosed invention, a pop-up target and its surrounds are separately monitored for radiations at the laser designator frequency. “Hit” or “Miss” scoring is based on detection of the laser radiation at the laser designator frequency illuminating the appropriate region around or on the target at the appropriate time with respect to a simulated missile launch signal at the start of the training engagement, in accordance with the engagement profile programmed into the scoring computer prior to the start of training. The laser aim scoring system send a signal to lower the pop-up target in response to a “Hit” score, and if desired by the user, also sends a signal to initiate smoke and flash signals from a Hoffman Kill Simulator interfaced with the system.

Abstract: An optical scheme and system involving a probe laser with simple analog pessing to detect an optical echo. This allows verification that a transmitter has hit a target receiver or will allow synchronized firing with another laser transmitter.

Abstract: The heterodyne detection efficiency of coherent laser radars is maximized coaxially aligning the local oscillator (LO) beam and the received laser beam when combined at the detector by preventing interference between the counterpropagating waves in the lasing rod within the lasing cavity by using optic polarization, magneto-optic polarization, and cavity end partial reflectors.

Abstract: A laser interrogator system and technique establishes low-observable idenication friend or foe (IFF) between two distinct positions. An interrogating laser transmits a laser pulse from a first position to a passive retroreflector fiber optic bundle located at a second position. The bundle retransmits a delayed laser retroreflector pulse. A receiver and processor at the first position processes the received retroreflected delayed laser pulse to determine a presence of a predetermined delay such that an IFF determination of the second position is achievable.

Abstract: Lightweight low power IR locater for reflection enhanced targets with .apeq.20 microsecond pulsed IR diode laser and 26 40 microsecond synchronized range-gated image.

Abstract: A phase compensation technique and apparatus utilizes a laser transmitter, acousto-optic/electro-optic modulators and a GRIN lens array to send out and receive phase shifted laser beams. Turbulence and optical phase distortions are compensated on outgoing and received wavefronts utilizing signal processing of the detected, mixed received and local oscillator beams.

Abstract: A near infrared illuminator for enhancing viewing of a target viewed with infrared viewing device when the target falls within a predetermined range. A pulse generator generates a laser pulse in the near infrared with a pulse clock for control of laser brightness and a pulse frequency adjust for control of laser blink rate. The pulse is transmitted along an optical path at a specific brightness and blink rate to a target. A detector within the optical path detects a reflected infrared signal from the target and converts the signal to an electrical signal which is processed by a processor to obtain target range information. A trigger logic controls the pulse clock rate means whereby when the target range falls within a predetermined range the laser pulse rate is increased such that increased illumination of the target is viewable with an infrared viewing device.