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| # | Post Title | Result Info | Date | User | Forum |
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 1 Relevance | 5 months ago | Peter McMullen | Software | |
| Hi Rui Working now. My fault was I scrolled up to Andre's post And read it as yours (which it is not) And it shows as "-- attachment is not available --"Now I have scrolled to the TOP And your links work. Please feel free to delete these 2 posts of mine as cured due user error | |||||
| Takeoff and Landing with a Tethered MagArrow | 1 Relevance | 11 months ago | Gretchen Schmauder | Hardware | |
| The following video shows the correct way to takeoff And land with MagArrow II tethered to the drone. Takeoff And Landing | |||||
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 1 Relevance | 1 year ago | Rui Zhang | Software | |
| @ahmed_ramadan_geo Regarding your questions: 1. It removes the maneuver effect due to the swing of the sensor as well. 2. There are really NO best way to do the compensation flight. There are two main requirements for a compensation flight: 1. Include as much roll/pitch/yaw motions as possible. 2. Avoid magnetic gradient. If you can fly the drone very high (>100m) over a low gradient area, a cloverleaf pattern is probably the best (as in traditional airborne surveys in which you can fly high to avoid the local gradient.). But this pattern is hard to fly, especially over a small area. 360-degree turn is simple And almost guaranteed to have no magnetic gradient in the compensation data since it is over the same location. If the MagArrow doesn't have much pitch And roll motion, 360-deg turn is sufficient. But it doesn't compensate well for pitch And roll maneuver noise (no much pitch/roll calibration). A survey pattern is between the two patterns described above. You may be able to use it, instead of doing a calibration flight. You can use the calibration file generation module to process the cloverleaf pattern. 3. Since the calibration flight is typically short, a base-station may not be necessary. Diurnal field change is usually not significant in a minute. 4. As I mentioned in 1., maneuver correction is also applied here. You can also use LP filter but make sure NOT to apply the heading compensation after the LP filter. | |||||
| What are the differences between the standard MFAM and the SX version? | 1 Relevance | 2 years ago | Gretchen Schmauder | Hardware | |
| The only difference between the standard And SX version is the sensitivity is 4pT/rt-Hz And 20 pT/rt-Hz respectively. Here is an expected response with the magnetometer moving past a generic magnetic projectile: In this case the amplitude is about 1nT in total from peak to peak. The feature itself is quite distinguishable. This is assuming there is no noise in the system. Here is what the data looks like with 4pT/rt-Hz noise: You can see the general structure is still there but there is a little more wiggle on the trace that is associated with the noise of the system. Here is the data with 20 pT/rt-Hz noise: Again, here the structure is clearly visible but the data looks a bit noisier. With some signal processing technique, such as low pass filtering, noises can be further reduced. Please note that in real surveys, detecting 1nT peak-peak anomalies is always a big challenge even with the most sensitive magnetometers due to other noise sources, such as motion noises And environmental noises. Therefore, SX version is in general NOT the limiting factor for conducting surveys. To understand this concept better, you can use the magnetic gradient tool developed by our partner in the UK, Geomatrix Earth Science. | |||||
| Using a USB/Ethernet Adaptor with ES-3000/Geode and SCS | 1 Relevance | 8 months ago | Randl Rivera | Hardware | |
| Question: Can a USB/RJ45 Ethernet be used with a Geometrics Seismograph And SCS? Answer: Yes it possible to use a USB/Ethernet with Geode / SCS software. We have a “vetted” manufacturer we are now shipping with Geode orders. PN 123-00287 (ADAPTOR, USB-ETH, FOR PCS W/O 10MBPS ETH OR RJ45 PORT, CONNECT BEFORE TURNING ON PC) $60 (check for current price) Some vetted models that are available on the internet: Cisco USB300M. Other vetted models:HIRO H50223 USB 2.0*TP-LINK model UE300 (USB 3.0)Supereal SR9600 (USB 2.0)ASIX AX88772a (USB 2.0)* the TP-Link was the preferred choice The important thing to consider is that the device must have the driver installed And be plugged into a 2.0 or 3.0 USB port when the PC is started. | |||||
| Does Geometrics equipment and software support "mini-sosie" surveying? | 1 Relevance | 2 years ago | Gretchen Schmauder | Hardware | |
| Surveying using a randomized impulsive source (called "mini-Sosie), such as a Wacker, is supported by the StrataVisor NZ And the Geode along with the Urban Seismic software And hardware package. Read our Random Source Seismic Surveying Manual In general, mini-Sosie surveying is useful in noisy, urban environments, particularly in close proximity to roads where near-field noise suppression can be used effectively. | |||||
| What are the differences between the standard MFAM and SX Versions | 1 Relevance | 2 years ago | Gretchen Schmauder | MFAM | |
| The only difference between the standard And SX version is the sensitivity is 4pT/rt-Hz And 20 pT/rt-Hz respectively. Here is an expected response with the magnetometer moving past a generic magnetic projectile: In this case the amplitude is about 2nT in total from peak to peak. The feature itself is quite distinguishable. This is assuming there is no noise in the system. Here is what the data looks like with 4pT/rt-Hz noise: You can see the general structure is still there but there is a little more wiggle on the trace that is associated with the noise of the system. Here is the data with 20 pT/rt-Hz noise: Again, here the structure is generally there but the data looks quite a bit noisier. So for smaller targets or more subtle anomalies they can be obscured or missed entirely. To understand this concept better, you can use the magnetic gradient tool developed by our partner in the UK, Geomatrix Earth Science. | |||||
| Working with GPX Route Files for the G-864 and other Geometrics Magnetometers | 1 Relevance | 2 years ago | Gretchen Schmauder | Application | |
| Recent Geometrics magnetometers use route files in GPX, KML, And other formats to describe mapped or marked surveys. Various tools – the Survey Manager route designer, online designers, desktop software, etc., can generate different flavors of these files. This document describes the flavor of GPX file used by G-864 And provides a simple recipe for transforming files generated in one on-line tool, into the flavor used by G-864. These other tools are helpful when creating routes that are not in the rectangular format that is the output of Route Designer. Click on Working with GPX route files for G864 to access the code for the tool. | |||||
| MagEditor download and install | 1 Relevance | 4 months ago | Otgonbayar Dorjsuren | General Magnetometer Info | |
| Hi there, How to download And install MagEditor software? Thanks, Oggi. | |||||
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 1 Relevance | 5 months ago | Andre Yudhistika | Software | |
| @rzhang yes, i extracted the config file And replaced the older config file. it worked for few days. now the expire trial warning is back | |||||
| RE: microSD card type and format | 1 Relevance | 11 months ago | Rui Zhang | Hardware | |
| @georesults The microSD card is used in MagArrow, G-864, MagEx And other soon-to-be-released products. | |||||
| microSD card type and format | 1 Relevance | 11 months ago | Rui Zhang | Hardware | |
| We suggest using microSD cards with specs equivalent to or better than SanDisk Extreme And format it to exFAT. | |||||
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 1 Relevance | 1 year ago | Ahmed Ramadan | Software | |
| @rzhang Thanks for your answer, why don't apply heading compensation after LPF? What about using the sequence below as processing flow chart: 1- Raw data of 20 hz3- Lp filter 40 fidicules (2seconds) >>> Maneuver correction4- Remove base mag 5- Heading correction compensation using (survey data processing of MagArrow)6- Lag Correction7- Igrf Removal8- Leveling And Microleveling kind regards, Ahmed | |||||
| RE: Geometrics preliminary MagArrow and MagEx data processing program download | 1 Relevance | 1 year ago | Ahmed Ramadan | Software | |
| Hello Dear Rui, I have questions regarding MagArrow Magnetic data compensation, if you can answer please, 1- Does the heading error compensation that applied by surveying data processing program remove the heading effect due to direction only or calibrates the maneuver effect due to the swinging of the sensor as well? 2- Regarding the heading compensation flight, I am confused about the best way to do this. In the manual, it is mentioned that we can apply a cloverleaf pattern (this is usually used in airborne survey) or a survey pattern or we can do a 360 degree turn at a certain point. However, it is written that we can use the calibration data measured in the turn, can I use the data from the turn to apply the heading error correction separately for each flight instead of doing a heading flight. Regarding the cloverleaf pattern application, is the data also processed in the same way using surveying data processing program? 3-What is the importance of the base station magnetometer data in this correction as mentioned in the manual, I think we can apply it without base magnetometer? 4- Finally, is there a specific flight that can be done to make maneuver correction (FOM) (roll, pitch And yaw) that we apply in conventional magnetic airborne survey? or We just resort to the LP filter. Sorry for the long post Kind Regards, Ahmed | |||||
| SeisImager installation and registration procedure | 1 Relevance | 2 years ago | Kolby Pedrie | SeisImager Software | |
| Attachment : New SeisImager Lite registration.pdf Attachment : SeisImager_Installation_Instructions_v7.6.pdf Please see the attached instructions. Registration ID's are typically found on the customer invoice, but can also be found using your order number or seismograph SN And company name here. | |||||
