Seismic Data Acquisition Module with Broadband Antenna, and Corresponding Systems, Devices, Components and Methods
Described herein are various embodiments of methods and corresponding hardware and software that are configured to permit a seismic data acquisition module to switch between GNSS systems according to which system at a given time is determined to provide the best signal characteristics for acquiring accurate positional and timing data regarding the precise geographic location of the seismic data acquisition module when it is deployed in the field, and the corresponding times at which seismic data are acquired and recorded thereby.
1 . A seismic data acquisition module, comprising:
a processor;
a Global Navigation Satellite System (GNSS) module operably connected to the processor, the GNSS module being configured to process GNSS signals originating from a plurality of different GNSS systems, such systems including at least the Global Positioning System (GPS) and the Global Navigation Satellite System (GLONASS), the GNSS signals of the different GNSS systems having respective corresponding GNSS signal characteristics associated therewith according to a field position of the seismic data acquisition module on or near a surface of the earth;
one and only one broadband antenna operably connected to the GNSS module and configured to receive GNSS signals from the plurality of different GNSS systems and provide same to the GNSS module;
wherein the processor, the GNSS module and the broadband antenna are together configured to receive, process and store positional and timing data provided by the plurality of different GNSS systems, the positional and timing data corresponding to the field position of the seismic data acquisition module and the times at which seismic data are acquired and recorded thereby, at least one of the processor and the GNSS module being configured, during or in preparation for data acquisition by the seismic data acquisition module in the field position, and at a given time, to select one of the GNSS systems determined to provide optimal GNSS signal characteristics at the given time.
2 . The seismic data acquisition module of claim 1 , wherein at least one of the processor and the GNSS module is configured to change acquisition of the positional data from the GNSS system selected previously at the given time to another GNSS system at another subsequent time as a result of the another GNSS system having been determined by at least one of the GNSS module and the processor to provide improved GNSS signal characteristics relative to those provided by the previously selected GNSS system at or near the another time.
3 . The seismic data acquisition module of claim 1 , wherein the signal characteristics include at least one of signal strength, signal encoding, signal encoding type, signal duration, number of signals provided by the system, latitude of the position, longitude of the position, and combination of the latitude and longitude.
4 . The seismic data acquisition module of claim 1 , wherein the GNSS systems further include the Galileo system.
5 . The seismic data acquisition module of claim 1 , wherein the GNSS systems further include the Compass system.
6 . The seismic data acquisition module of claim 1 , wherein the positional data correspond to a field position of the seismic data acquisition module.
7 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a helical broadband antenna.
8 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a universal ultra-wideband SMM antenna.
9 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a half-cardioid shaped dual arm antenna.
10 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a wide-band printed circuit antenna.
11 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a rover antenna.
12 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a patch antenna.
13 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a turnstile antenna.
14 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a spiral antenna.
15 . The seismic data acquisition module of claim 1 , wherein the broadband antenna is a choke ring antenna.
16 . A method of obtaining positional data for a seismic data acquisition module from a plurality of Global Navigation Satellite System (GNSS) systems, the seismic data acquisition module comprising a processor, a GNSS module operably connected to the processor, the GNSS module being configured to process GNSS signals originating from a plurality of different GNSS systems, such systems including at least the Global Positioning System (GPS) and the Global Navigation Satellite System (GLONASS), the GNSS signals of the different GNSS systems having respective corresponding GNSS signal characteristics associated therewith according to a field position of the seismic data acquisition module on or near a surface of the earth and the times at which seismic data are acquired and recorded thereby, the seismic data acquisition module further comprising one and only one broadband antenna operably connected to the GNSS module and configured to receive GNSS signals from the plurality of different GNSS systems and provide same to the GNSS module, the method comprising:
using the processor, the GNSS module and the broadband antenna to receive, process and store positional and timing data in a storage device or memory located in the seismic data acquisition module, the positional and timing data being provided by a selected one of the plurality of different GNSS systems.
17 . The method of claim 16 , further comprising selecting the one of the plurality GNSS systems determined to provide optimal GNSS signal characteristics.
18 . The method of claim 16 , further comprising switching acquisition of the positional data from the GNSS system selected previously to another GNSS system at another subsequent time as a result of the another GNSS system having been determined by at least one of the GNSS module and the processor to provide improved GNSS signal characteristics relative to those provided by the previously selected GNSS system.
19 . The method of claim 16 , wherein the signal characteristics include at least one of signal strength, signal encoding, signal encoding type, signal duration, number of signals provided by the system, latitude of the position, longitude of the position, and combination of the latitude and longitude.
20 . The method of claim 16 , wherein the GNSS systems further include the Galileo system.
21 . The method of claim 16 , wherein the GNSS systems further include the Compass system.