Skip to Content
Last modified by robert on 2026/08/12 13:08
From version 119.1
edited by robert
on 2026/08/12 13:08
Change comment: There is no comment for this version
To version 105.4
edited by robert
on 2026/02/17 15:44
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -73,18 +73,6 @@
73 73  
74 74  If you come to collect your node and it is missing~-~- LOOK FOR IT! It may not have gotten far. We have found dozens of nodes by spending 15 minutes looking for them.
75 75  
76 -= External Power =
77 -
78 -Both the 5Hz IGU-16HR and 5s BD3C-5 can be optionally powered via external battery via either a replacement bottom half (the 5Hz nodes) or a battery cable accessory (BD3C-5) using standard lead acid batteries from 9-36v. We have done preliminary testing at 250 Hz with a 12v battery:
79 -
80 -- BD3C-5: ~~2 days of recording per 1 Ah
81 -
82 -- IGU16-HR 3C:  ~~3.5 days of recording per 1 Ah
83 -
84 -- IGU16-HR 1C: ~~7 days of recording per 1 Ah
85 -
86 -Of course, these can also be fit with a solar panel & charge controller which would then theoretically keep them going indefinitely (limited only by the disk storage, which at 250 Hz could be on the order of 12 months).
87 -
88 88  = **Installation** =
89 89  
90 90  (% class="box infomessage" %)
... ... @@ -106,44 +106,35 @@
106 106  
107 107  [[HERE>>http://auspass.edu.au/field/NODES_blank_fieldlog.pdf]] is an example logsheet that works well for nodes, feel free to print and use!
108 108  
109 -== 2. Burial ==
110 -
111 -**ALL nodes should be buried flush with the ground, no exceptions**. If the node is sticking up the data data quality will be significantly reduced (especially the horizontal channels, see [[below>>https://auspass.edu.au/xwiki/bin/view/Instrumentation/SmartSolo%20Nodes/#HIGU-16Horizontalnoise26howtoavoid]]). It also catches wind, makes them more visible, etc. But mostly it makes the data bad.
112 -
113 -//Don't be lazy. Do it right. //
114 -
115 -[[An example of what not to do.>>image:1786503344572-296.jpg||data-xwiki-image-style-alignment="center" height="341" width="404"]]
116 -
117 -[[North channel PSD of the sensor in the picture above (it is not good)>>image:1786503812585-338.02.28 PM.png||data-xwiki-image-style-alignment="center" height="244" width="451"]]
118 -
119 -== 3. Node Placement ==
97 +== 2. Node Placement ==
120 120  )))
121 121  
122 122  **Site Analysis**:
123 123  
124 -* **Take compass measurements away from the sensor as it will affect your measurement. Use a stick or shovel to help align.**
125 -* Take photographs from various angles to document the site setup thoroughly. Have a colleague stand next to it pointing at it.
126 -* Include a detailed site description in your notes.
102 +* **Take compass measurements away from the sensor as it will affect your measurement.**
103 +* Take photographs from various angles to document the site setup thoroughly.
104 +* Include a detailed site description in your notes
127 127  
128 -== 4. GPS Considerations ==
106 +== 3. GPS Considerations ==
129 129  
130 130  (% class="wikigeneratedid" %)
131 -The GPS antenna is at the top and center of the unit, and will (usually) only receive signal with a clear sky view directly above. The signal is able to penetrate plastic and terracotta planters and a thin (2 cm?) layer of soil, but may struggle if the soil layer is too thick. **These nodes will not start recording without attaining a GPS lock** and repeated attempts will excessively drain the battery.
109 +The GPS antenna is at the top and center of the unit, and will (usually) only receive signal with a clear sky view directly above. The signal is able to penetrate plastic and terracotta planters and a thin layer of soil, but may struggle if the soil layer is too thick. **These nodes will not start recording without attaining a GPS lock** and repeated attempts will excessively drain the battery.
132 132  
133 -== 5. Visibility and Location Marking ==
111 +== 4. Visibility and Location Marking ==
134 134  
135 135  **Flag Placement**: Position a flag, preferably in a bright color (avoid green or yellow), near the instrument to aid in its future location.
136 136  
137 137  **GPS Marking**:
138 138  
139 -* Use a GPS device to mark the instrument's exact location. Most modern cell phones can get to about a 3m error with their internal GPS also; you can probably also get away with investing a few dollars in a good app that shows error and lets you log markers.
140 -* Also write the GPS down on paper (ie your [[LOG SHEET>>http://auspass.edu.au/field/NODES_blank_fieldlog.pdf]]).
117 +* Use a GPS device to mark the instrument's exact location.
118 +* Record this location in both your paper notes and the GPS device.
141 141  
142 -== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)6. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
120 +== (% style="color:inherit; font-family:inherit; font-size:max(18px, min(20px, 14.4444px + 0.462963vw))" %)5. Charge Time, Pre-Deployment & Post-Deployment(%%) ==
143 143  
144 144  * **Charging Duration**: Both types of nodes take approximately 6-8 hours to fully charge from a flat state.
145 145  * **Pre-Deployment Charging**:
146 146  ** Although the nodes hold their charge well, it's beneficial to give them a "top up" charge before deployment.
125 +
147 147  * **Operational Duration**:
148 148  ** When recording at 250 Hz, with GPS on and Bluetooth disabled, the instruments are expected to last about 30 days per charge cycle. If they are set to run only overnight, this can be extended to 60 days.
149 149  
... ... @@ -158,7 +158,7 @@
158 158  ** Charge levels for transport will be advised by the freighter. The required SoC will depend on volume and transport method (air, land, sea).
159 159  
160 160  (((
161 -== 7. Data Sharing and Metadata Creation ==
140 +== 6. Data Sharing and Metadata Creation ==
162 162  )))
163 163  
164 164  **GPS Data**:
... ... @@ -173,7 +173,7 @@
173 173  
174 174  * Create and organize metadata according to the [[ANU metadata standard txt file>>attach:example_metadata.txt]]. This is going to be particularly important if you are reusing nodes at different sites... not documenting the serial numbers (of the **top half** of the node) and the times they were deployed can lead to station mix-ups.
175 175  
176 -== 8. Additional Best Practices ==
155 +== 7. Additional Best Practices ==
177 177  
178 178  * **Training and Familiarisation**: Make sure all team members are adequately trained in using the GPS devices, compass use, and other equipment to ensure consistent and accurate data collection.
179 179  
... ... @@ -333,7 +333,7 @@
333 333  
334 334  * Once a new project is created, the Data Transfer View panel will display connected nodes with details like series number and data size.
335 335  * If “Prospect not matched” appears, it simply means the new project doesn’t match the original programming project. This is not a concern.
336 -* Select all nodes and right-click to “force download”. This starts the download process.[[image:Smartsolo harvesting #4 copy.png]]
315 +* Select all nodes and right-click to “force download”. This starts the download process.
337 337  * Completed downloads will appear as new folders in the Downloaded Data panel.
338 338  )))
339 339  1. (((
... ... @@ -340,17 +340,14 @@
340 340  **Exporting Data in Readable Format**:
341 341  
342 342  * Go to the “Tool” menu and select “export seismic data”.
343 -* Tailor other parameters to project preference and ensure "Sample Interval" matches the setting used during node reset (note: the standard used by ANU is 4ms, or 250hz)
322 +* Tailor other parameters to personal preference and ensure "Sample Interval" matches the setting used during node reset.
323 +* Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
344 344  * (% class="box warningmessage" %)
345 345  (((
346 -**Ensure export data is set to "COUNTS" (int32), not "mV" (float). This is critical!**
326 +* **Ensure to export data as "COUNTS" (int32), not "mV" (float). This is critical!**
327 +
328 +* **Set "Remove Gain" to the same decibel gain as during programming. By default ANU sets this to 24db for short period nodes (a scaling factor of 15.848932), and 6db (a factor of 2.0) for broadband nodes.**
347 347  )))
348 -* Set "Remove Gain" to the same decibel gain as during programming. By default ANU sets this to 24db for short period nodes (a scaling factor of 15.848932), and 6db (a factor of 2.0) for broadband nodes.
349 -* Set "Remove DC" to "Yes" to centre the data around the zero value
350 -* Set the correct Start Time (UTC) and End Time (UTC) of the project to prevent the unnecessary export of older data
351 -* [[image:Smartsolo harvesting #9 copy.png]]
352 -* Click “prepare” followed by “run” to start reformatting. Monitor this process in the small panel at the bottom left.
353 -* The data will be exported to the SOLODATA folder. For a windows system, the following file explorer page is where you must navigate to to locate your project folder[[image:Smartsolo harvesting #8 copy.png]]
354 354  )))
355 355  
356 356  == Smart Solo IGU-16HR Polarity Notice ==
... ... @@ -417,8 +417,11 @@
417 417  **Finalizing the Download**:
418 418  
419 419  * After downloading, mark the //"D"// box on your temporary labels to indicate completion.
396 +
397 +
420 420  )))
421 421  
400 +[[image:1706153266647-145.png||data-xwiki-image-style-alignment="center" height="340" width="603"]]
422 422  
423 423  
424 424  
... ... @@ -450,16 +450,14 @@
450 450   'gain':1,
451 451   'sensitivity': 257019225.55108312}
452 452  
453 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:16HR_Z_huddle.png||alt="IGU16_Z_huddle.png"]]
432 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_Z_huddle.png]]
454 454  
455 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:16HR_N_huddle.png||alt="IGU16_N_huddle.png"]]
434 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:IGU16_N_huddle.png]]
456 456  
457 457  == IGU 16-1C ==
458 458  
459 -The 1C nodes seem to have the same response as the 3-channel IGU-16HR-3C (above), however the response posted at IRIS-NRL seems to imply that there is no poles and zeros information (e.g. a flat/linear response). This is 100% not so.
438 +The 1C nodes seem to have a slightly different response to the 3C (TBA)
460 460  
461 -[[IGU-16 1C, X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter. Seems to be same response as IGU-16HR-3C.>>image:16HR1C_Z_huddle.png||alt="IGU16_1C_Z_huddle.png"]]
462 -
463 463  == BD3C-5 ==
464 464  
465 465   'BD3C': {'poles':[(-1720.4+0j), (-1.2+0.9j), (-1.2-0.9j)],
... ... @@ -467,23 +467,13 @@
467 467   'gain':1.69726e-05,
468 468   'sensitivity': 702651512.6046528}
469 469  
470 -Above 0.5 Hz, the BD3C-5 response fits well:
447 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.png]]
471 471  
472 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_Z_huddle.0.5.png]]
449 +[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz filter>>image:BD3C_N_huddle.png]]
473 473  
474 -[[X axis is samples (.01 s), Y axis is velocity (m/s), 0.5-5 Hz bandpass filter>>image:BD3C_N_huddle.0.5.png]]
475 -
476 -(% class="wikigeneratedid" %)
477 -Below the corner frequency (0.2 Hz) the phase response still fares well, but amplitude response may need to be dialed in a bit (it seems a bit high). We are working to try to calibrate this a bit better. In the next two figures the filter is **0.1** to 5 Hz:
478 -
479 -
480 -[[BD3C **0.1 **to 5 Hz bandpass filter>>image:BD3C_Z_huddle.0.1.png]]
481 -
482 -[[BD3C **0.1** to 5 Hz bandpass filter>>image:BD3C_N_huddle.0.1.png]]
483 -
484 484  == IGU-16 Horizontal noise & how to avoid ==
485 485  
486 -The** 5 Hz nodes** are susceptible to horizontal noise due to the placement of geophones in the units, **but this can be mitigated by completely burying the units flush with the ground.** In the below example, the node was set on the floor of our basement set on its plastic carrying case support. As such the amount of horizontal noise noticeably increases above ~~ 10Hz.
453 +The** 5 Hz nodes** are susceptible to horizontal noise due to the placement of geophones in the units, **but this can be mitigated by completely burying the units flush with the ground.** In the below example, the node was set on the floor of our basement set on its plastic carrying case support. As such the amount of horizontal noise noticeably increases above ~~ 10Hz.
487 487  
488 488  [[IGU-16HR-3C Power spectrum huddle test vs a CMG-6TD (S1) and TC120/Centaur combo. The N and E channels have excess noise above 10Hz due to "sticking up" out of the ground.>>image:IGU16_spectrum.png]]
489 489  
16HR1C_Z_huddle.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -92.1 KB
Content
16HR_N_huddle.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -88.4 KB
Content
16HR_Z_huddle.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -80.8 KB
Content
1786503344572-296.jpg
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -1.4 MB
Content
1786503808210-822.02.28 PM.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -437.8 KB
Content
1786503812585-338.02.28 PM.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -437.8 KB
Content
BD3C_N_huddle.0.1.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -65.9 KB
Content
BD3C_N_huddle.0.5.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -68.4 KB
Content
BD3C_N_huddle.png
Size
... ... @@ -1,1 +1,1 @@
1 -72.1 KB
1 +73.3 KB
Content
BD3C_Z_huddle.0.1.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -64.3 KB
Content
BD3C_Z_huddle.0.5.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -52.5 KB
Content
BD3C_Z_huddle.png
Size
... ... @@ -1,1 +1,1 @@
1 -52.1 KB
1 +64.6 KB
Content
IGU16_1C_Z_huddle.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.robert
Size
... ... @@ -1,1 +1,0 @@
1 -72.3 KB
Content
Smartsolo harvesting #4 copy.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -33.8 KB
Content
Smartsolo harvesting #4.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -33.8 KB
Content
Smartsolo harvesting #6 copy.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -33.6 KB
Content
Smartsolo harvesting #8 copy.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -38.3 KB
Content
Smartsolo harvesting #8.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -60.0 KB
Content
Smartsolo harvesting #9 copy.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.JackD
Size
... ... @@ -1,1 +1,0 @@
1 -28.7 KB
Content
XWiki.XWikiComments[0]
Date
... ... @@ -1,1 +1,0 @@
1 -2026-07-09 10:45:51.967
Author
... ... @@ -1,1 +1,0 @@
1 -Mark Goldman
Comment
... ... @@ -1,1 +1,0 @@
1 -I can verify that the default orientation for the SmartSolo 3C nodes is positive values for case motion to the South, West, and downwards. We have co-located nodes with permanent stations and noticed this correlation when comparing waveforms.