Method for elimination of ambiguous solutions in a hyperbolic positioning system
First Claim
Patent Images
1. A method for eliminating ambiguous positions in a hyperbolic positioning system including a master control station, a plurality of transmitters for transmitting timing information to a device for self-determining its position, said method comprising the steps of:
- selecting by said master control station a group of said transmitters which are in an RF line of sight of a target;
estimating by the master control station a true position and a false position on an intersection of hyperbolic asymptotes of at least two pairs of the plurality of transmitters;
determining by the master control station whether said false position is within a predetermined range of said actual position; and
transmitting by said master control station to said device for self-determination valid sets of transmitters which are capable of unambiguously providing said true position of said device for self-determining its position.
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Abstract
A method for providing detection of timing anomalies and eliminating falsely detected positions in a hyperbolic positioning system for a simulated battlefield system. The method selects a large number of transmitters for calculation of position of an object or person on the battle field. In addition, transmitters are selected which have a high dilution of precision factor.
72 Citations
20 Claims
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1. A method for eliminating ambiguous positions in a hyperbolic positioning system including a master control station, a plurality of transmitters for transmitting timing information to a device for self-determining its position, said method comprising the steps of:
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selecting by said master control station a group of said transmitters which are in an RF line of sight of a target; estimating by the master control station a true position and a false position on an intersection of hyperbolic asymptotes of at least two pairs of the plurality of transmitters; determining by the master control station whether said false position is within a predetermined range of said actual position; and transmitting by said master control station to said device for self-determination valid sets of transmitters which are capable of unambiguously providing said true position of said device for self-determining its position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for eliminating ambiguous positions in a hyperbolic positioning system including a master control station, a plurality of transmitters for transmitting timing information to a device for self-determining its position, said method comprising the steps of:
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selecting by the device for self-determining a group of said transmitters which are in an RF line of sight of a target; estimating by the device for self-determining a true position and a false position on an intersection of hyperbolic asymptotes of at least two pairs of the plurality of transmitters; determining by the device for self-determining whether said false position is within a predetermined range of said actual position; determining by the device for self-determining whether at least one valid combination of said three transmitters was received; and determining by the device for self-determining a current position of said device for self-determining.
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20. In a battlefield simulation system including a master control station, a plurality of transmitters for transmitting timing information to plurality of personnel and vehicles, each having location detection devices, a position location method for self-locating each location detection device, said position location method comprising the steps of:
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selecting by said master control station a group of said transmitters which are in an RF line of sight of a target; estimating by the master control station an true position and a false position on an intersection of hyperbolic asymptotes of at least two pairs of the plurality of transmitters; determining by the master control station whether said false position is within a predetermined range of said actual position; transmitting by said master control station to said device for self-determination valid sets of transmitters which are capable of unambiguously providing said true position of said device for self-determining its position; determining by said location detection device whether at least one valid combination of said three transmitters was received; determining by the locations detection device for self-determining a current position of said device for self-determining; and updating by the location detection device a position of said location detection device to be the current position of said location detection device.
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Specification