초록 ▼

A method of using altitude information to arrive at a more accurate GPS position. A 3D GPS position is used as an initial estimate. The latitude and longitude of the initial estimate are used to retrieve an altitude from a database. This altitude is used to calculate a 2D GPS position. The 2D GPS po

A method of using altitude information to arrive at a more accurate GPS position. A 3D GPS position is used as an initial estimate. The latitude and longitude of the initial estimate are used to retrieve an altitude from a database. This altitude is used to calculate a 2D GPS position. The 2D GPS position is then used to retrieve another altitude from the database, and the calculate-retrieve process is continued until the calculation converges.

대표청구항 ▼

A method of using altitude information to arrive at a more accurate GPS position. A 3D GPS position is used as an initial estimate. The latitude and longitude of the initial estimate are used to retrieve an altitude from a database. This altitude is used to calculate a 2D GPS position. The 2D GPS po

A method of using altitude information to arrive at a more accurate GPS position. A 3D GPS position is used as an initial estimate. The latitude and longitude of the initial estimate are used to retrieve an altitude from a database. This altitude is used to calculate a 2D GPS position. The 2D GPS position is then used to retrieve another altitude from the database, and the calculate-retrieve process is continued until the calculation converges. d according to claim 15, further including determining a scheme for assigning the binary codes at the iteration levels. 19. A method according to claim 15, wherein assigning a unique binary code includes assigning a unique two bit binary code. 20. A method according to claim 15, wherein forming the binary representation includes associating an iteration level with positions in the binary representation. 21. A method according to claim 15, further comprising ending the iteration based on a level of precision. 22. A method according to claim 15, further comprising ending the iteration based on a size of the binary representation. 23. A method according to claim 15, wherein relating the geographic information to a location includes computing a latitude and longitude based on the geographic information. 24. A method according to claim 15, wherein relating the geographic information to the coordinate system includes computing a centroid based on the geographic information. 25. A method according to claim 15, wherein iteratively creating subdivisions includes creating subdivisions of equal size. 26. A method according to claim 15, further comprising initializing the binary representation to zero. 27. A method according to claim 15, further comprising initializing the binary representation to include ones in every location. 28. A method according to claim 15, further including specifying a size for the binary representation. 29. A method according to claim 15, further including specifying a size of sixty-four bits for the binary representation. 30. A method according to claim 15, further including selecting a reference frame within the coordinate system. 31. A method according to claim 15, further including providing a scheme to assign a binary code. 32. A method according to claim 15, further including receiving the geographic information as one of latitude, longitude, direction, parcel, ward, street address, town, city, zip code, telephone number, area code, destination, and direction. 33. A method for comparing a first location and a second location, comprising, using an iterative process to obtain a binary representation of the first location, using the iterative process to obtain a binary representation of the second location, performing a binary computation utilizing the first location binary representation and the second location binary representation to obtain a binary result, and computing a distance measure from the binary result. 34. A method according to claim 33, wherein using an iterative process includes, relating the location to a coordinate system, and, iteratively creating subdivisions from at least one of the coordinate system or a subdivision of the coordinate system, assigning a binary code to the created subdivisions, and, forming the binary representation based on the binary code of the identified created subdivision. 35. A method according to claim 33, wherein performing a binary computation includes performing an exclusive OR (XOR). 36. A method according to claim 33, wherein computing a distance measure further includes associating binary digits of the binary result to at least one distance measure. 37. A method according to claim 33, further including identifying at least one binary representation corresponding to at least one neighbor of the first location. 38. A method according to claim 33, further including identifying at least one binary representation corresponding to at least one neighbor of the second location. 39. A method according to claim 33, further including computing at least one binary representation corresponding to at least one neighbor of the first location. 40. A method according to claim 33, further including computing at least one binary representation corresponding to at least one neighbor of the second location. 41. A method according to claim 33, further including determining at least one of whether the binary representation of the first location is a neighbor of the binary representation of the second location, and whether the binary representation of the second location is a neighbor of the binary representation of the first location. 42. A system for comparing at least two locations, comprising, an interface to receive geographical information based on at least one of the at least two locations, a processor having instructions to convert the geographical information to a binary representation using a hierarchical segmentation scheme, where levels of the hierarchical scheme are associated with a precision for thc binary representation, a database that includes binary representations of at least another of the at least two locations, a comparator to perform a binary computation between binary representations. 43. A system according to claim 42, further including a difference translator to determine difference measure from the comparator result. 44. A system according to claim 42, further comprising a neighbor location module to identify the binary representations of neighbors for the at least two locations. 45. A system according to claim 42, wherein the comparator is an exclusive OR. 46. A system according to claim 42, wherein the processor has instructions for, relating the geographical information to a coordinate system, iteratively creating subdivisions from at least one of the coordinate system or a subdivision of the coordinate system, assigning a binary code to the created subdivisions, and, forming the binary representation based on the binary code of the identified created subdivision. 47. A system according to claim 42, further including precision indicators associated with the binary representations in the database. 48. A system according to claim 42, further including a precision indicator associated with the binary representation. 49. A system according to claim 42, further including identity information associated with the binary representations in the database. 50. A system for forming a binary representation of geographic information based on a coordinate system, the system comprising, means for providing the geographic information, means for implementing a hierarchical segmentation scheme to create subdivisions based on the geographic information, means for determining a level of the hierarchial scheme to provide a desired precision for the binary representation means for assigning a binary code to the subdivisions, and, means for forming the binary representation based on the assigned binary codes and the desired precision. 51. A system according to claim 50, wherein the means for providing include any internet-accessible device. 52. A system according to claim 50, wherein means for implementing a hierarchical segmentation scheme include a processor and processor instructions. 53. A computer product for brining a binary representation of geographic information based on a coordinate system, the computer product disposed on a computer readable medium and having instructions for causing a processor to, relate the geographic information to thc coordinate system, provide a hierarchical segmentation scheme to create subdivisions based on the geographic information, determine a level of the hierarchical scheme to provide a desired precision, assign a binary code to the subdivisions, and, form thc binary representation based on the assigned binary codes and the desired precision. 54. A computer product according to claim 53, wherein instructions to relate the geographic information include instructions to determine a location in the coordinate system. 55. A computer product according to claim 53, wherein instructions to provide a hierarchical segmentation scheme include instructions to provide an iterative scheme. 56. A computer product according to claim 53, wherein instructions to provide a hierarchical segmentation scheme include instructions to provide a recursive scheme. 57. A computer product according to claim 53, wherein instructions to