Position reporting emergency location system
DCFirst Claim
1. A position reporting system for reporting a position of a movable aircraft-relative to the earth'"'"'s surface where there is a Navstar GPS system in operation comprising:
- GPS receiver means in a movable aircraft for determining data parameters of position and time of said aircraft from the Navstar GPS system;
CPU means in said aircraft coupled to said GPS receiver means for continuously storing said data parameters at time spaced intervals in time spaced data packets and for storing aircraft identification indicia;
digital data transmission means coupled to said CPU means for transmitting said time spaced data packets containing the aircraft identification indicia, the position and the time data in a digital format to a remote receiver means;
accelerometer means in said aircraft for responding to an acceleration of the aircraft in excess of a preset acceleration limit for activating said CPU means and said digital transmission means for automatic transmission of said data packets; and
means for limiting the transmission of said data packets to the data packets stored in the CPU means at such time as an acceleration of the aircraft in excess of the preset limit occurs.
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Abstract
A position reporting emergency locating system utilizes a satellite navigational system to continuously monitor the position of a craft relative to the earth'"'"'s surface and to repetitively obtain and record it'"'"'s position as a function of real time as to position, heading and other parameters including the craft identification. An event responding initiator such as an accelerometer or sudden descent determination automatically transmits a position and craft identification to a remote receiver or other craft for relay. The system can be accessed, controlled and/or monitored by remote receiver and transmitter devices. The parameters are logged in a memory.
183 Citations
18 Claims
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1. A position reporting system for reporting a position of a movable aircraft-relative to the earth'"'"'s surface where there is a Navstar GPS system in operation comprising:
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GPS receiver means in a movable aircraft for determining data parameters of position and time of said aircraft from the Navstar GPS system; CPU means in said aircraft coupled to said GPS receiver means for continuously storing said data parameters at time spaced intervals in time spaced data packets and for storing aircraft identification indicia; digital data transmission means coupled to said CPU means for transmitting said time spaced data packets containing the aircraft identification indicia, the position and the time data in a digital format to a remote receiver means; accelerometer means in said aircraft for responding to an acceleration of the aircraft in excess of a preset acceleration limit for activating said CPU means and said digital transmission means for automatic transmission of said data packets; and means for limiting the transmission of said data packets to the data packets stored in the CPU means at such time as an acceleration of the aircraft in excess of the preset limit occurs. - View Dependent Claims (2, 3, 4, 5, 17)
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6. A communication system for determining a position of a movable aircraft relative to the earth'"'"'s surface where there is a Navstar GPS system in operation comprising:
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GPS receiver means in a movable aircraft for determining data parameters of position and time of said aircraft from the Navstar GPS system; CPU means in said aircraft coupled to said GPS receiver means for continuously storing said data parameters at time spaced intervals in time spaced data packets and for storing aircraft identification indicia; digital transmission means coupled to said CPU means for transmitting said time data packets containing the aircraft identification indicia, position and the time data in a digital format to a remote receiver means; and modem receiver means in said aircraft for receiving data communications from a remote CPU means, said modem receiver means being responsive to received data communications for causing said digital transmission means to transmit data packets. - View Dependent Claims (7, 8, 9, 16)
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10. A method for reporting .the position of an aircraft relative to the earth'"'"'s surface where there is a satellite based navigation system in operation, the method comprising the steps of:
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determining data parameters of position, velocity, heading, and current time with respect to said aircraft from signals received from the satellite based navigation system; continuously storing said data parameters in a digital data packets at time spaced intervals together with storing of identification indicia for the aircraft; determining the occurrence of an acceleration of the aircraft exceeding a preset acceleration limit for the aircraft; and automatically transmitting digital data packets containing the identification indicia and the data parameters at time spaced intervals to a remote receiver means upon the occurrence of an acceleration of the aircraft exceeding the preset acceleration limit. - View Dependent Claims (11, 12, 13, 14, 15)
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18. A digital automated vehicle impact magnitude and site transmission system for indicating the location of a moveable craft relative to the earth'"'"'s surface when a preset sudden deceleration occurs and where there is a Navstar GPS system in-operation comprising:
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GPS receiver means in a moveable craft or vehicle for determining data parameters of position and time of said vehicle from the Navstar GPS system; CPU means in said vehicle coupled to said GPS receiver means for continuously storing and processing said data parameters at specific time spaced intervals in time spaced data packets and for determining and storing vehicle identification indicia and for analyzing input from accelerometer means and transmission commands where said time spaced data packets contain the vehicle identification, position and time data in a digital format; digital data transmission means coupled to said CPU means for transmitting/said time spaced data packets to remote receiver means; accelerometer means in said vehicle for detecting and responding to an acceleration of the vehicle in excess of a preset acceleration limit for activating said CPU means and said digital transmission means for automatic transmission of said time spaced data packets; and means for limiting the transmission of said data packets to the data packets stored in the CPU means at such time as an acceleration of the vehicle occurs in excess of the preset limit.
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Specification