Laser based reflectors for GPS positioning augmentation

Claim 2

An integrated satellite-laser positioning system comprising: a mobile unit; wherein said mobile unit further comprises: a scanning and rotating laser beacon generating a laser beam; a satellite positioning system (SATPS) further comprising a SATPS receiver; and a SATPS antenna; and an integrated SATPS/laser navigational computer; and a plurality of targets; wherein said plurality of targets further comprises: a plurality of SATPS satellites further comprising a plurality of visible SATPS satellites; and a plurality of laser reflectors further comprising a plurality of visible laser reflectors; wherein said mobile unit detects a range information between said mobile unit and each said visible target; and wherein said integrated SATPS/laser navigational computer utilizes aid range information between said mobile unit and each said visible SATPS satellite and each said visible laser reflector to obtain said mobile unit positional information.

Claim 3

The integrated satellite-laser positioning system of claim 1; wherein said mobile unit further comprises: a scanning and rotating laser beacon generating a laser beam; a GPS navigational system further comprising a GPS receiver; and a GPS antenna; and an integrated GPS/laser navigational computer; and wherein said plurality of targets further comprises: a plurality of GPS satellites further comprising a plurality of visible GPS satellites; and a plurality of laser reflectors further comprising a plurality of visible laser reflectors, wherein each said visible laser reflector is placed in a location with known coordinates; and wherein said integrated GPS/laser navigational computer utilizes range information between said mobile unit and each said visible GPS satellite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit positional information.

Claim 4

The integrated satellite-laser positioning system of claim 1; wherein said mobile unit further comprises: a scanning and rotating laser beacon generating a laser beam; a GLONASS navigational system further comprising a GLONASS receiver; and a GLONASS antenna; and an integrated GLONASS/laser navigational computer; and wherein said plurality of targets further comprises: a plurality of GLONASS satellites further comprising a plurality of visible GLONASS satellites; and a plurality of laser reflectors further comprising a plurality of visible laser reflectors, wherein each said visible laser reflector is placed in a location with known coordinates; and wherein said integrated GLONASS/laser navigational computer utilizes range information between said mobile unit and each said visible GLONASS satellite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit positional information.

Claim 5

The integrated satellite-laser positioning system of claim 1; wherein said mobile unit further comprises: a scanning and rotating laser beacon generating a laser beam; a combined GPS/GLONASS navigational system further comprising a combined GPS/GLONASS receiver; and a combined GPS/GLONASS antenna; and an integrated GPS/GLONASS/laser navigational computer; and wherein said plurality of targets further comprises: a plurality of combined GPS/GLONASS satellites further comprising a plurality of visible GPS/GLONASS satellites; and a plurality of laser reflectors further comprising a plurality of visible laser reflectors; and wherein each said visible laser reflector is placed in a location with known coordinates; and wherein said integrated GPS/GLONASS/laser navigational computer utilizes range information between said mobile unit and each said visible GPS/GLONASS satellite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit positional information.

Claim 6

The integrated satellite-laser positioning system of claim 1; wherein said mobile unit further comprises: a scanning and rotating laser beacon generating a laser beam; a GPS pseudolite navigational system further comprising a GPS pseudolite receiver; and an integrated GPS/laser navigational computer; and wherein said plurality of targets further comprises: a plurality of GPS pseudolites; and a plurality of laser reflectors further comprising a plurality of visible laser reflectors; and wherein each said visible laser reflector is placed in a location with known coordinates; and wherein said integrated GPS/laser navigational computer utilizes range information between said mobile unit and each said GPS pseudolite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit positional information.

Claim 7

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least two visible GPS satellites; and wherein plurality of laser reflectors further comprises: at least two visible stationary laser reflectors, wherein each said laser reflector is located in a known and fixed position; and wherein said integrated GPS/laser navigational computer utilizes range information between said mobile unit and each said visible GPS satellite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit three-dimensional positional information.

Claim 8

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least two visible GPS satellites; and wherein plurality of laser reflectors further comprises: at least one visible stationary laser reflector, wherein each said laser reflector is located in a known and fixed position; and wherein said integrated GPS/laser navigational computer utilizes range information between said mobile unit and each said visible GPS satellite, and range information between said mobile unit and each said visible laser reflector to obtain said mobile unit two-dimensional positional information.

Claim 9

The integrated satellite-laser positioning system of claim 6; wherein said integrated GPS/laser navigational computer further comprises: a database system capable of storing the coordinates of each said laser reflector; and wherein said integrated GPS/laser navigational computer is capable of identifying each said visible laser reflector by using the range information between said mobile unit and each said visible laser reflector and the stored coordinates of each said visible laser reflector.

Claim 10

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least two visible GPS satellites; and wherein plurality of laser reflectors further comprises: at least two visible known laser reflector, wherein each said visible known laser reflector is located in a known and fixed position; and at least one visible unknown laser reflector, wherein each said visible unknown laser reflector is located in a position with unknown position coordinates; and wherein said mobile unit utilizes the range data between said mobile unit and each said visible GPS satellite, and the range data between said mobile unit and each said visible known laser reflector in order to determine said mobile unit three-dimensional position coordinates; and wherein said mobile unit utilizes its three-dimensional position coordinates measured in at least three different locations and the range data between said mobile unit placed in at least three different locations and each said visible unknown laser reflector to determine the three-dimensional coordinates of each said visible unknown laser reflector.

Claim 11

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least two visible GPS satellites; and wherein plurality of laser reflectors further comprises: at least one visible known laser reflector, wherein each said visible known laser reflector is located in a known and fixed position; and at least one visible unknown laser reflector, wherein each said visible unknown laser reflector is located in a position with unknown position coordinates; and wherein said mobile unit utilizes the range data between said mobile unit and each said visible GPS satellite, and the range data between said mobile unit and each said visible known laser reflector in order to determine said mobile unit two-dimensional position coordinates; and wherein said mobile unit utilizes its two-dimensional position coordinates measured in at least two different locations and the range data between said mobile unit placed in at least two different locations and each said visible unknown laser reflector to determine the two-dimensional coordinates of each said visible unknown laser reflector.

Claim 12

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least three visible GPS satellites; and wherein plurality of laser reflectors further comprises: at least one visible unknown laser reflector, wherein each said visible unknown laser reflector is located in a position with unknown position coordinates; and wherein said mobile unit utilizes the range data between said mobile unit and each said visible GPS satellite in order to determine said mobile unit position three-dimensional coordinates; and wherein said mobile unit utilizes its three-dimensional position coordinates measured in at least three different locations and the range data between said mobile unit placed in at least three different locations and each said visible unknown laser reflector to determine the three-dimensional coordinates of each said visible unknown laser reflector.

Claim 13

The integrated satellite-laser positioning system of claim 9; wherein said integrated GPS/laser navigational computer further comprises: a database system capable of storing the coordinates of each said known visible laser reflector; and wherein said integrated GPS/laser navigational computer is capable of adding coordinates of each said visible unknown laser reflector.

Claim 14

The integrated satellite-laser positioning system of claim 2; wherein said plurality of GPS satellites further comprises: at least two visible GPS satellites; and wherein each said visible laser reflector placed in a position with known coordinates further comprises: a laser reflector identification information (ID); and an intelligent reflector (IR) capable of providing said ID upon reflecting said laser beam; and wherein said integrated GPS/laser navigational computer utilizes said stored coordinates of each said visible laser reflector, each said visible laser reflector ID information, and said obtained range data between said mobile unit and each said visible laser reflector to identify each said visible laser reflector.

Claim 15

The integrated satellite-laser positioning system of claim 13; wherein said integrated GPS/laser navigational computer further comprises: a database system capable of storing the coordinates of each said laser reflector.

Claim 18

The method of claim 15, wherein said step of utilizing said range information for three-dimensional navigation of said mobile unit further includes the steps of: placing at least one unknown visible laser reflector in a visible location with unknown coordinates; determining three-dimensional coordinates of said mobile unit in at least three consecutive locations; determining three-dimensional coordinates of each said visible unknown laser reflector; making a new set of visible laser reflectors utilized for three-dimensional navigation purposes by replacing one said visible known laser reflector by one said visible unknown laser reflector; and determining the three-dimensional coordinates of said mobile unit by measuring the range data between said mobile unit and each said visible satellite, and by measuring the range data between said mobile unit and each said visible laser reflector from said new set of visible laser reflectors.

Claim 21

The method of claim 17, wherein said step of utilizing said range information for two-dimensional navigation of said mobile unit further includes the steps of: placing at least one unknown visible laser reflector in a visible location with unknown coordinates; determining two-dimensional coordinates of said mobile unit in at least two consecutive locations; determining two-dimensional coordinates of each said visible unknown laser reflector; making a new set of visible laser reflectors utilized for two-dimensional navigation purposes by replacing one said visible known laser reflector by one said visible unknown laser reflector; and determining the two-dimensional coordinates of said mobile unit by measuring the range data between said mobile unit and each said visible satellite, and by measuring the range data between said mobile unit and each said visible laser reflector from said new set of visible laser reflectors.