DWQA User Profile 13vadimka13Questions(15)Answers(13)Posts(0)CommentsFabio P, hiThank you for advice. I solve my problem by updating app and use shapefiles Instead of kml."Stake out a point" means seeking point on earth's surface by its coordinates. It is opposite process to land survey. This words from geomatics.There is a drawback of Landstar vs SW Maps. Landstar 7 uses max 12 sattelites for survey and stake out. At least he writes so, fix in the pine forest catches with a bang 35 km from the base. As I understood this limitation is NMEA 0183. I tried to install the latest 4.11 version of NMEA, it did not help. On the other hand, it doesn't make sense, because it works so well. Plus, there is a change in the elevation mask and the use of any datum. In SW Maps, the application writes that it uses all possible satellites, which is good news. For a stake out in heavy conditions, this will be a plusOn Answer for Stake out with SW mapsHi, Jan89For staking out in SW Maps (2.8.0.2, on my 2.7.2 it doesn't work at all) you will import Shape file with points. You should import points in WGS84 or other coordinate system in txt or csv format in Landstar 7 app and use "export+" feature with "WGS84 whithout projection" settings. After that, you must relocate all files (because they include projection files and other important) from folder with shape file (you choose in Land star 7) in common drive/SW_Maps/Maps/shapefiles (for Xiaomi Redmi Note 5 MIUI Android 9). Import shp to SW, create layer and tap on point, stake out parameters appear.There is also oneway to create shape file. You will import kml file (you can write in windows note in format:# B L1 12.34567890 12.34567890etc.)Import in Global mapper https://www.bluemarblegeo.com/global-mapper/ . Export such as vector data in shape (in settings you'll choose points)Write me, if you face with problemsOn Answer for Stake out with SW mapsFabio, thank youYour explanation gave me good apportunity to download kml and other. But I still can't stake out a point with centimeter accuracy. In SW Maps, there is a transition to Google maps, but it uses GPS or mocklocation, without specifying how many centimeters are left. All this is available in Landatsr 7. This is not an advertisement, just an app really convenient for stake out. I need the app to show how many centimeters to the point, how much to the north, to the east. Or I don't understand something?On Answer for Stake out with SW mapsI don't know, how to import own points in SW Maps. This feature is most likely not available in the app. But I recommend that you use app Landstar 7 https://play.google.com/store/apps/details?id=com.huace.landstar7&hl=ru&gl=US with NMEA with settings: CHC, Other, NMEA0183. In this app you can import own coordinates. Moreover, you can do coordinates transformation, site calibration and use local coordinatesOn Stake out with SW mapsI also had the idea to record the RTCM3. 2 stream from the VRS port at the time of the measurements, so that in case of a bad decision, use this data for PPK. But is it feasible? Is it possible to simultaneously record UBX and RTCM3 stream.2 VRS? Will it then be possible to convert RTCM to UBX and perform post-processing?On Post processing from 3 or more base stations at the same time (PPK + VRS)I measured ground control point (GCP) by simpleRTK2b in 1 hour static mode and staked out it in RTK in 1 cm from GCP. It was in 35 km from base station with clean sky.Also I have experience with measurments in con wood (15 m hight trees, I stayed between its, I have 30 degrees of clean sky above me). 30 min static mode (writing UBX (RINEX) file) and RTK 1hz gave me 3 cm and 100% fix error from land mark. Distance between base and rover is 35 km.On How good is simplertk2b?You can see photo: https://drive.google.com/drive/folders/1Wx7Wy2jK93JOrcMDV9kBAkA8kmzJP2j-?usp=sharingOn Answer for Antenna cable lengthI cut cable by cutting pliers, soldered its to board to pins in other side of SMA female connector. After that I pinned the cable to board by plastic screedOn Answer for Antenna cable lengthAndrewRL, thank you for idea with USB Serial Port to TCP/IP Socket, UDP! I found the same app: TCPUART, but it free. I use it with Lefebure NTRIP Client app for mock location. This app allowed me to connect my receiver via USB to Mapit GIS for point staking out. Also I can use high accuracy with Locus Map app with different high resolution mapsOn SW Maps and NTRIP?Clive1, it is interesting. On the other hand, 60 channels are enough for my tasksOn Answer for Min and max number of satellitesClive1, thank you! I will rtyOn Answer for Raw data writing problemClive1, thank you so much! I solved my problem. I downloaded RTKLIB 2.4.3 demo 5 b33e (http://rtkexplorer.com/downloads/rtklib-code/) and converted all my UBX to L1/L2 RINEX and had fix. No, I used RTKLIB from GitHub.Why in RTK I have fix all time and in post processing on the same points and rates (1Hz), from the same base stations I have Fix 50-80% of time? Is this due to different processing algorithms in SW Maps and RTKLIB? I wonder if all the calculations in RTK take place in the u blox chip or in a smartphone?But there is UBX: https://drive.google.com/drive/folders/1s4QMP_AQVc5TIJP1MrL2RsRTtaPVqFpx?usp=sharing, which I couldn't convert in OBS. What do you think about it?On Answer for Raw data writing problemI use USB connection with smartphone. Observation files UBX-RXM-RAWX messages USB - on, Navigation files UBX-RXM-SFRBX messages USB - on in U-centerOn Raw data writing problemI won't hack up ANN-MB, because I may to cut cable and establish new SMA.On Antenna cable lengthClive1, Hello! Thank you for answer! In this U-blox manual for ANN-MB: https://www.u-blox.com/sites/default/files/products/documents/GNSS-Antennas_AppNote_%28UBX-15030289%29.pdf write that "The use of an active antenna is always advisable if the RF cable length between the receiver andantenna exceeds about 10 cm. Care should be taken that the gain of the LNA inside the antenna doesnot lead to an overload condition at the receiver. For receivers that also work with passive antennasan antenna LNA gain of 15 dB is usually sufficient, even for cable lengths up to 5 m. There is no needfor the antenna LNA gain to exceed 26 dB for use with u-blox receivers (at the RF input). With shortercables and a gain above 35 dB, an overload condition might occur on some receivers." As I understand it, I can shorten it to 10 cm. If there is an overload, will the receiver be damaged? If there's a protection from overloading the signal?On Antenna cable lengthClive1, hello! Thank you so much! I solved my problem! On Answer for Moving base seting for position+headingSorry for wrong topic name. It is: U center configuration problemOn Moving base seting for position+headingTopocomputer1, así que planeo usar el receptor GPS en condiciones normales, y los puntos en el bosque de coníferas reciben una estación total con un recorrido de teodolito pavimentado desde los puntos GPSOn Answer for Static (Raw data) recording timetopocomputer1, gracias!On Answer for Static (Raw data) recording timeArdusimple, thank you!On Static (Raw data) recording timeArdusimple, thank you!On RTK measurements in difficult conditionsArdusimple, thank you!On Effect of the cover over the u-blox ANN-MB-00 Antenna for GNSS Dual Band on satellite signal receptionClive1, thank you!On Answer for GNSS antenna upgradeChoke rings Parameters for GNSS antenna: https://kb.unavco.org/kb/article/choke-ring-antenna-calibrations-311.htmlOn GNSS antenna upgradeArdusimple, thank you! About 3 - What material should the Board box be made of?On RTK measurements in difficult conditionsI solved my problem. I used rtkconv 2.4.2, but now I use rtklib 2.4.3 b33 and it workOn Answer for Raw data writing problemclive1, how did you determine that? How do I convert this file to rinex?On Answer for Raw data writing problemCrop
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