I am working on a project where I obtain raw gps measurements in a supported Android phone and use rtklib's Android port that is rtk-gps to correct this data with correction from a dgps base station.
So my question is - is this achievable using rtklib? Also I see that rtklib gui expect rinex format so do I need to convert the raw data i get from mobile to rinex format and feed to rtklib library?
Should be possible with Android 10 or later where GNSS duty cycle can be disabled - http://www.pilablu.de/apps/gps/precise-gps-en
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We are working on developing our own iOS app connecting with two Movesense sensors and fetching the acc, gyro and mag data. The app is going to be used for measurement of 8 hours, with 52 Hz. We'd like to collect both sensor time stamps and the phone time stamps, in order to make an accurate synchronisation of these two sensors. The default DFU settings seem to only give us sensor time stamps, which looks like this (example of only gyroscope data by Movesense Showcase app):
Should I modify the DFU, or is it possible to just state it in Xcode when getting the data package? I have tried to go through the available DFU packages and the .apk files as listed on the Movesense website. I am personally not familiar with the DFU programming, therefore we'd like to use one existing DFU package from Movesense, which is hopefully stable for the connection and data sampling.
You do not need to create your own firmware (DFU) for that. All the API's are available from the mobile phone, so just follow up the instructions given in this question & answer:
Android app dev: Finding the best way to synchronize the timestamps of two sensors
When recording using our Movesense Showcase app the situation is different since that app does not do multi sensor clock synchronisation. When recording with plain iOS Showcase app I would do "hit sensors together in the beginning and end of the recording" to synchronise the sensor data streams using the peak in acceleration. Then remember to treat the data streams as having different sample rates and base your analysis on the timestamps instead.
I want to track a vehicle and send its coordinate locations to multiple mobile devices at the same time. Is there a way to do that? i also need to send the live feed of the buses' current location Can i do it with agora.io?
Agora Aignaling SDK is perfect for this
You can get started through their demos on Github for different platforms.
I want to get the live stream from DJI spark to my PC, because I want to run a deep learning model to do object detection in real time. Is there any ways to get the live stream by using RTMP or RTP servers. I found by using Tellopy module in python we can get the live feed from DJI tello.
If you mean built-into the SDK, then the answer is no but you could decide the video stream yourself and package it up accordingly based on the needs of the server you wish to communicate with.
A few have done this work, the GO app, in order to support the various streaming sites has done it so it's known to be possible. It might take some work though.
Best of luck!
I am trying to make a tizen gear application in which I record accelerometer and gyroscope data of user activity for about an hour and give analytics based on this raw sensor data saved in a csv file.
I have a tizen wearable hybrid application. I am using native service application to retrieve sensor data, and further sending it to web application for writing into csv file.
Upon testing, I have observed that after few minutes of starting the data recording (after about 3-8 minutes) the sensor data is no longer received (seen from the logs in sensor_callback() function). Moreover, during the test scenarios, I have observed that SHealth application opens up and starts recording the dynamic workout activity of the user. Is it possible that SHealth application might be hindering my application from receiving sensor data? If yes, how could one possibly resolve this?
Thanks in advance.
Actually nothing can be say without seeing any code.
SHealth can be an issue but it is just a guess as you have not provided any logs that can show SHealth is an issue.
I will suggest you to follow the sensor app workflow properly from the below guide. The guides also provided sample app.
Accessing Heart Rate Monitor (HRM) Sensor data for Native applications
How to use Light Sensor in Tizen
Is there any code for GPS receiver and for GPS net server available?
I want to build complete application: a client for the MS Win Pocket PDA and a server which shows position of my trucks on map. It is easy to find via internet code for GPS receiver (PDA) but I cannot find corresponding part code for server.
If I am understanding you correctly, you want the code to be able to render trucks on a map on your server.
If that is the case, I think that the approach you need depends on the language you are using. Plotting GPS coordinates on an X-Y plane is not a straight forward thing to do, reason being that if you where to cut the surface of the globe into pieces you would not end up with perfect squares, and would thus have to use a technique called Map Projections.
There are various readily available mechanisms provided by companies such a Google provided that you implement a web application. If on the other hand you where looking for a desktop application, SwingX provides a Java API which allows you to build GPS related desktop applications through the use of OpenStreetMaps.
So basically, you can have something as follows:
Create a concurrent server which accepts data from these PDA's and save it in the DB;
At a given period of time, pull the data from your database and refresh your desktop application or web page.
Edit: You can take a look at this tutorial to see how you can draw and plot on a map Using SwingX. If you shall be using Java, you might want to give a look at this previous SO post for more Java mapping API's.