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Plainsboro, NJ, United States

Patent
Princeton Satellite Systems | Date: 2012-06-08

This invention is a solar-powered charging station for electric and hybrid vehicles. A vehicle parks at a space with the charging station and uses a credit card, debit card, cash, smart card or network connection to a database like EZ-Pass to pay for the space and the electricity. The station automatically charges the vehicle as long as it is connected to the station. The station automatically stops charging when the vehicle is fully charged. The customer only pays for the space and the electricity consumed. If the charging circuit is broken the customer must reinsert the smart card or credit card to restart charging. Sufficient funds are removed from the payment method on initiation of charging. Any money not used for charging is put back onto the smart card or account if the user reinserts it prior to leaving.


Patent
Princeton Satellite Systems and Princeton University | Date: 2013-05-10

A system and method for producing and controlling high thrust and desirable specific impulse from a continuous fusion reaction is disclosed. The resultant relatively small rocket engine will have lower cost to develop, test, and operate that the prior art, allowing spacecraft missions throughout the planetary system and beyond. The rocket engine method and system includes a reactor chamber and a heating system produce fusion reactions the stable plasma. Magnets produce a magnetic field that confines the stable plasma. A fuel injection system and a propellant injection system are included. Cold propellant into a gas box for converting a cold propellant into a warm propellant plasma at one end of the reactor chamber. The propellant and fusion products are directed out of the reactor chamber through a magnetic nozzle and are detached from the magnetic field lines producing thrust.


Patent
Princeton Satellite Systems | Date: 2012-08-29

A route finding system comprising a memory, GPS device, library of maps, an optimization algorithm and means for capturing user input and outputting data. The user input includes points, goals, constraints and relative preferences. Goals and constraints include characteristics of the route such as the type of road, number of turns, and traffic. The relative preferences are converted into numerical weights, positive or negative. In addition, the system integrates social networks ratings and comments to further enhance route selection.


The invention is for a sensor for use in spacecraft navigation and communication. The system has two articulated telescopes providing navigation information and orientation information as well providing communications capability. Each telescope contains a laser and compatible sensor for optical communications and ranging, and an imaging chip for imaging the star field and planets. The three optical functions share a common optical path. A frequency selective prism or mirror directs incoming laser light to the communications and ranging sensor. The Doppler shift or time-of-flight of laser light reflected from the target can be measured. The sensor can use the range and range rate measured from the incoming laser along with measurements from the imaging chip to determine the location and velocity of the spacecraft. The laser and laser receiver provide communications capability.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 99.96K | Year: 2010

The Air Force requires autonomous flight software threat and anomaly detection and isolation algorithms to support the process of on-board event detection, planning, and task execution in order to enhance satellite responsiveness. We propose developing a sensor suite and estimation algorithms for autonomously detecting and tracking an orbital threat onboard a tactical satellite. The algorithms will make use of a hemispherical field of view multi-spectral telescope using large format APS sensors and a laser for target illumination. This will provide sensing in all lighting conditions. The proposed sensor would be on an articulated base allowing for on-orbit calibration and tracking of moving targets without rotating the spacecraft. The algorithms would integrate these measurements with measurements from other sources such as on-board radar, ground based radar and telescopes. The package would include Unscented Kalman Filters for state estimation and detection filters for maneuver detection. BENEFIT: This proposal is addressing Space Superiority and Responsive Space missions. The initial target customer for this technology is the Space Superiority Office of SMC. The anticipated benefit is specific recommendations and sensor requirements for improved space situational awareness and rapid threat detection. A conceptual design of a new hemispherical multispectral sensor will be completed. Threat state estimates are a necessary input to any evasive maneuvering in the event of an impending collision. Therefore this innovation makes an autonomous onboard collision avoidance system feasible for a range of spacecraft. The associated technologies would be applicable to many NASA missions particularly those that are in deep space where bandwidth limitations are inhibitors to responsiveness. The sensors proposed provide excellent space situational awareness for multivehicle manned or robotics missions, for instance satellite servicing and docking.

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