GNSS smart antenna and receiver system with weatherproof enclosure

• US 8,686,899 B2
• Filed: 08/26/2011
• Issued: 04/01/2014
• Est. Priority Date: 08/26/2010
• Status: Active Grant

• Current Assignee: Hemisphere GNSS(USA) Incorporated
• Original Assignee: Hemisphere GNSS(USA) Incorporated
• Inventors: Jakab, Andrew J., Feller, Walter J., Chen, Chang
• Primary Examiner(s): Phan, Dao
• Application Number:
  US13/219,335
• Publication Number:
  US 20120050104A1
• Time in Patent Office: 949 Days
• Field of Search: 342/357.26, 342/357.27, 342/357.29, 342/357.46, 701/468, 701/470
• US Class Current: 342/357.26
• CPC Class Codes: G01S 19/34 Power consumption
• CPC Class Codes: G01S 19/36 relating to the receiver frond end
• CPC Class Codes: G01S 19/54 using carrier phase measurements; using long or short baseline interferometry

Abstract

A GNSS smart antenna system includes an antenna, a processor and a receiver combination unit adapted for economical construction and enhanced performance when performing differential guidance operations. The antenna unit includes a dual frequency antenna, a dual frequency receiver unit, dual processors, and a radio bay for receiving a radio device. Rover and base smart antenna units are interchangeable in the system.

Claims

1. A GNSS system, which comprises:

a rover GNSS antenna and receiver unit including a rover enclosure, a rover GNSS antenna mounted in the enclosure, a rover output device, a microprocessor, and a rover GNSS receiver mounted in the enclosure and connected to the antenna;

rover data transmitted from said output device;

a base GNSS antenna and receiver unit including a base enclosure, a base GNSS antenna mounted in the base enclosure, a microprocessor, a data storage unit, a raw data logging and processing device, a base output device, and a base GNSS receiver mounted in the base enclosure and connected to the base antenna;

base data transmitted from said base output device;

said base antenna and receiver unit including user interface controls and a graphical user interface (GUI) mounted on said base enclosure;

wherein said user interface controls are adapted for receiving programming instructions; and

wherein said programming instructions input into said user interface controls are communicated to said rover GNSS antenna, thereby resulting in programming instructions to said rover GNSS antenna.

2. The system of claim 1 wherein:

said rover output device comprises an output mechanism chosen from the list comprising;

a CAN, a Pulse Per Second (PPS) output, and a USB serial port.

3. The system of claim 1 wherein:

said base output device comprises an output mechanism chosen from the list comprising;

a CAN, a Pulse Per Second (PPS) output, and a USB serial port.

4. The system of claim 1, further comprising:

a vehicle, wherein said rover GNSS antenna and receiver unit is attached to said vehicle; and

an implement towed by said vehicle.

5. The system of claim 4, further comprising:

a steering controller;

a hydraulic steering manifold;

a wheel-angle sensor;

a user interface; and

an implement steering controller.

6. The system of claim 1 wherein:

each of said rover GNSS antenna and receiver unit and said base GNSS antenna and receiver unit enclosures includes a dome casing and a component casing;

each said dome casing housing a top shelf including an RF shield;

a registration pin extending from each said top shelf into a respective dome casing, thereby aligning said dome casing; and

a primary O-ring seal and a backup O-ring seal located between each top shelf and each respective dome casing.

7. The system of claim 6, further comprising:

each said dome casing including a radiused edge adapted for directing water away from the remainder of the respective said rover GNSS antenna and receiver unit and said base GNSS antenna and receiver unit.

8. The system of claim 6, further comprising:

each said component casing including a radio bay enclosure and a plurality of connector interface ports and at least one data cable interface; and

wherein replacement radio components may be connected to said plurality of connector interface ports without completely disassembling the respective said rover GNSS antenna and receiver unit and said base GNSS antenna and receiver unit.

9. The system of claim 1, further comprising:

a tripod affixed to said rover enclosure; and

wherein said rover data comprises surveying measurements conforming to a preselected tract of land, including geospatial position and elevation of said rover GNSS antenna and receiver unit.

10. The system of claim 1, further comprising:

a crossed-dipole, spiral radiating assembly affixed to at least one of said antenna and receiver unit enclosures.

11. The system of claim 1, further comprising:

a selectable-gain, crossed-dipole radiating arm assembly affixed to at least one of said antenna and receiver unit enclosures.

12. A method of collecting surveying data of a selected tract of land, the method comprising the steps:

locating a base GNSS antenna and receiver unit in proximity to the selected tract of land, said base GNSS antenna and receiver unit including a base enclosure, a base GNSS antenna mounted in the base enclosure, a microprocessor, a data storage unit, a raw data logging and processing device, a base output device, and a base GNSS receiver mounted in the base enclosure and connected to the base antenna;

said base antenna and receiver unit further including user interface controls and a graphical user interface (GUI) mounted on said base enclosure;

placing a rover GNSS antenna and receiver unit over a monument located within said selected tract of land, said rover GNSS antenna and receiver unit including a rover enclosure, a rover GNSS antenna mounted in the enclosure, a rover output device, a microprocessor, and a rover GNSS receiver mounted in the enclosure and connected to the antenna;

said rover antenna and receiver unit further including an accelerometer and a height-measuring device, wherein said height-measuring device selected from the list comprising;

a laser, an ultrasonic transducer, and sonar;

detecting tilt of said rover antenna and receiver unit with said accelerometer;

detecting the height measurement of said rover antenna and receiver unit above said monument with said height-measuring device;

transmitting base data comprising at least geospatial position data from said base output device;

transmitting rover data comprising at least geospatial position data and said height measurement from said rover output device;

inputting programming instructions into said user interface controls of said base antenna and receiver unit;

transmitting said programming instructions from said base antenna and receiver unit to said rover antenna and receiver unit; and

reprogramming said rover antenna and receiver unit based upon said transmitted programming instructions.

13. The method of claim 12, further comprising the step:

affixing a tripod to said rover enclosures.