Integrated automated system for waste site characterization

• US 4,973,970 A
• Filed: 07/14/1989
• Issued: 11/27/1990
• Est. Priority Date: 07/14/1989
• Status: Expired due to Fees

• Current Assignee: General Atomics, Inc.
• Original Assignee: General Atomics, Inc.
• Inventors: Reeser, Harold G.
• Primary Examiner(s): Buczinski, Stephen C.
• Assistant Examiner(s): Hellner, Mark
• Application Number:
  US07/380,116
• Time in Patent Office: 501 Days
• Field of Search: 342/352, 342/357, 324/326, 324/330, 324/331, 324/323, 364/424, 364/443, 364/444, 364/449, 367/19
• US Class Current: 342/357.44
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: G01S 19/41 Differential correction, e.g. DGPS [differential GPS]

Abstract

A system for characterizing contamination levels of a selected site uses a base station for the collection of data and generating waste site characterization and remediation needs reports. An on-site station is provided to detect the contamination levels at selected points within the site and transmit this data to the base station. The on-site station also includes a transceiver which relays information to the base station from the Global Positioning System satellite constellation which pertains to the precise location of the on-site station within the site to be characterized. The base station may also have a specific transceiver which is in communication with the Global Positioning System satellite constellation for determining the precise topographical position of the base station and for correlating this data with the topographical position of the on-site station to refine the latter. Both the on-site station and the base station include transceivers which permit communication between these stations for the purpose of directing and refining field operations.

Claims

1. A Global Positioning System (GPS) satellite constellation referenced site characterization system which comprises:

a base station;

a land based on-site station including a detector for determining a contamination level at selected points on and below the surface of said site, and a transceiver at said on-site station for relaying a first signal from said constellation to said base station indicative of the topographical position of said on-site station, and for sending a second signal to said base station indicative of said contamination level at said selected point; and

a transceiver including means positioned at said base station to receive and correlate said first and second signals for characterizing said site.

2. A GPS satellite constellation referenced site characterization system as recited in claim 1 wherein said base station transceiver receives a third signal from said constellation indicative of the relative position of said base station to said constellation to establish the topographical location of said base station for correlating said third signal with said first signal to refine said first signal.

3. A GPS satellite constellation referenced site characterization system as recited in claim 1 further comprising a probe, said detector being mounted on said probe for movement therewith.

4. A GPS satellite constellation referenced site characterization system as recited in claim 1 further comprising a plurality of said on-site stations.

5. A GPS satellite constellation referenced site characterization system as recited in claim 1 further comprising means for compiling a plurality of correlated first and second signals to characterize said site.

6. A GPS satellite constellation referenced site characterization system as recited in claim 1 wherein said on-site station is mobile.

7. A GPS satellite constellation referenced site characterization system as recited in claim 1 wherein said base station is mobile.

8. A GPS satellite constellation referenced site characterization system which comprises:

a base station;

means for detecting a contamination level at selected points on and below the surface of said site;

means for relaying a first signal from said constellation via said selected point to said base station, said first signal being indicative of the relative position of said point with said constellation to establish the topographical location of said selected point;

means for transmitting a second signal from said selected point to said base station, said second signal being indicative of said contamination level; and

means at said base station for combining said first and second signals to characterize said site.

9. A GPS satellite constellation referenced site characterization system as recited in claim 8 further comprising means for combining said first and second signals to prepare a site characterization and remediation needs report.

10. A GPS satellite constellation referenced site characterization system as recited in claim 8 further comprising means for receiving a third signal from said constellation at said base station, said third signal being indicative of the relative position of said base station with said constellation to establish the topographical location of said base station.

11. A GPS satellite constellation referenced site characterization system as recited in claim 10 further comprising means to correlate said first and third signals for refining said first signal.

12. A GPS satellite constellation referenced site characterization system as recited in claim 8 wherein said detecting means, said first signal relaying means and said second signal transmitting means, in combination, establish an on-site station.

13. A GPS satellite constellation referenced site characterization system as recited in claim 12 wherein said on-site station is mobile for movement within the area of said site.

14. A GPS satellite constellation referenced site characterization system as recited in claim 12 which comprises a plurality of said on-site stations.

15. A GPS satellite constellation referenced site characterization system as recited in claim 8 wherein said base station is mobile.

16. A method for characterizing a site using GPS satellite constellation referenced locations at the site which comprises the steps of:

establishing a land based on-site station to detect a contamination level at selected points on and below the surface of said site;

relaying a first signal from said constellation to a base station via said on-site location, said first signal being indicative of the topographical location of said point;

transmitting a second signal from said on-site station to said base station indicative of said detected contamination level; and

correlating said first and second signals to characterize said site.

17. A method for characterizing a site using GPS satellite constellation referenced locations at the site as recited in claim 16 further comprising the steps of:

receiving a third signal from said constellation at said base station, said third signal being indicative of the topographical location of said base station; and

correlating said first signal and said third signal to refine said first signal.

18. A method for characterizing a site using GPS satellite constellation referenced locations at the site as recited in claim 16 further comprising the step of boring into the surface of the earth to detect subsurface contamination levels in situ.

19. A method for characterizing a site using GPS satellite constellation referenced locations at the site as recited in claim 16 further comprising the step of establishing a plurality of said on-site stations.

20. A method for characterizing a site using GPS satellite constellation referenced locations at the site as recited in claim 16 further comprising the step of moving said on-site station over said site.

21. A method for characterizing a site using GPS satellite constellation referenced locations at the site as recited in claim 16 further comprising the step of preparing a site characterization and remediation needs report using said correlated first and second signals.