Patent
Helicopter obstacle detector
Reads0
Chats0
TLDR
In this article, a pulsed Doppler radar is mounted adjacent to the tip of a helicopter rotor blade for sensing obstacles in the helicopter path, and the rotor tip velocity shifts the frequency of radar echos so that the echo from obstacles can be separated from clutter.Abstract:
A pulsed Doppler radar mounted adjacent to the tip of a helicopter rotor blade for sensing obstacles in the helicopter path. The rotor tip velocity shifts the frequency of radar echos so that, through pulsed Doppler radar techniques, the echos from obstacles can be separated from clutter.read more
Citations
More filters
Patent
Trailer based collision warning system and method
TL;DR: In this paper, a trailer based collision warning system is coupled to industry-standard tractor to trailer wiring to provide the trailer with power and signals such as left turn indication and right turn indication.
Patent
System and method of avoiding collisions
TL;DR: In this paper, a collision avoidance system including a control module, a first transmitting device connected to the control module where the first receiving device receives a return of the signal transmitted from the first transmission device and transmits a first return signal representative of the return to the controller device, and a second transmitting device is connected to control module device, where the second receiving device includes measurement circuitry used to measure the first and second return signals and display means for displaying a transverse location of an object as a function of said first andsecond return signals.
Patent
Unmanned air vehicle transmission line docking surveillance
TL;DR: In this article, a small unmanned air vehicle system with autonomous electrical energy transmission line docking capability and especially usable in military or other surveillance situations is described. But the authors do not specify the payload of the UAV.
Patent
Obstacle avoidance system for helicopters and aircraft
TL;DR: In this paper, a system for detecting objects in the flight path of an aircraft and alerting the pilot to their presence includes a laser radar subsystem for emitting a beam of laser energy, receiving returns from objects, and processing the returns to produce range data related to the range of the objects from the aircraft.
Patent
System and method for warning of potential collisions
TL;DR: In this paper, a collision avoidance system for a vehicle is described, which consists of one or more transmitting devices, one and more receiving devices, a control module and a mirror, and visual indicators for warning a driver of the hazard detected by the control module.
References
More filters
Patent
Anti-collision vehicular radar system
John C. Sims,John B. Flannery +1 more
TL;DR: In this article, an asymmetrical magic tee was used to detect Doppler frequency signals whose relative phase relationship determined whether the signal is an opening or closing Dopple signal.
Patent
Helicopter rotating blade detection system
TL;DR: In this paper, a helicopter detection system which operates on the specular flash energy of the doppler shift frequency signals reflected from the rotating blades of a helicopter is provided, which is capable of inhibiting the generation of the detection signals at time corresponding to the reception of interference type radar signals by the radar set.
Patent
Coded coherent transponder
TL;DR: A transponder including a receiver and transmitter for receiving an interrogation signal and transmitting a coherent response with circuitry for modulating the coherent response to include a predetermined coded complex phase and/or amplitude shift therein to convey information.
Patent
Adaptive collision threat assessor
TL;DR: In this article, a system is included to adaptively assess a detected threat in accordance with the relative bearing representative measurements thereof to determine the collision potential of the threat with the radar, and a comparison test is conducted at each selected number of time increments for detecting a deviation between correspondingly generated initial approach and instantaneous relative bearing measurement signals which is greater than the corresponding level of confidence signal.
Patent
Rotor tip synthetic aperture radar
TL;DR: In this article, a rotor tip synthetic aperture radar is described, including a rotor operable to rotate, a radar receiver positioned in the rotor and for relaying received signals to a second position such as the cab of a helicopter.