gps | A software GPS correlater | Map library
kandi X-RAY | gps Summary
kandi X-RAY | gps Summary
This is a software correlator for GPS. Our primary reference for FFT-based correlation was Andrew Holme's homebrew GPS receiver documentation, which we highly recommend for background. This project is currently the focus of the 2017 ECE capstone team. The Python prototype developed will be used in conjunction with the data generator to develop revised hardware, and higher performance algorithms. Once the hardware and software perform adequately, they will be implemented into launch hardware for the rocket and OreSat.
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- Compute the GPS code
- Gets the code for each chip
- Calculate the loop coefficients
- Return the tracking code for a given satellite
- Import data from a file
- Convert a byte string to IQPairs
- Initialize time vector
- Return complex data
- Acquire a single satellite
- Finds the satellite orbit of the given code
- Make the output plot
- Print the output table
- Make a swig_interface file
- Create the entry for a block
- Checks the parity of the data
- Returns a numpy array of the data in the stream
- Writes satellite data to file
- Process a compound definition
- Find compound members and members
- Parse the DoxyClass
- Test the experiment
- Returns a list of lists that matches the given list
- Parses the Doxyfile
- Parse the DoxyFunction
- Return whether or not the DoxyFriend is a member
- Parse the data
gps Key Features
gps Examples and Code Snippets
Community Discussions
Trending Discussions on gps
QUESTION
I am trying to ingest JSON array data into Azure data explorer, as per this Microsoft article. (Only the JSON Array section) https://docs.microsoft.com/en-us/azure/data-explorer/ingest-json-formats?tabs=kusto-query-language
I have one table with two columns(messageId,Message) message contain json data and i want to extract this data into different columns. all of the fields from the array are just blank.
enter code here { 'data': { 'type': 'ABC', 'id': '1234567890', 'attributes': { 'event': 'update', 'logged_at': '2021-06-03T15:41:22.000Z', 'heartbeat_id': '12345678', 'gps_valid': True, 'gps': { 'distance_diff': 0.22, 'total_distance': 127.79 }, 'hdop': 12, 'fuel_level': 180.4, 'relative_position': { 'distance': '3', 'country_code': 'Uk' } },`
CODE: AMO | mv-expand data = message.data | extend type = data.type, id = data.id` }
...ANSWER
Answered 2021-Jun-15 at 10:19If I understand correctly, there's no property-bag/array you need to expand (using mv-expand
), rather you can extend/project the properties of your choice directly, e.g:
QUESTION
I'm doing a project with a Ublox NEO 6m gps and a Raspberry Pi 4 model B and I'm stuck on the following error:
...ANSWER
Answered 2021-Jun-07 at 15:17I'm assuming this is due to your code re-initializing the connection each loop. I recommend trying the following code instead --
QUESTION
I am trying to get the keys of the properties and make them column names. How do I do this please? The list just goes on and on so I am thinking a loop to get the keys as column names and the items as rows. How do I do this please?
...ANSWER
Answered 2021-Jun-10 at 14:41Need this?
QUESTION
I don't know how to better describe it. I was working on react-native project, something happened and I can't run it anymore for some reason. I'm getting weird messages like some function could not be cloned.
...ANSWER
Answered 2021-Jun-10 at 08:06I figured out that it's most likely babel issue. If you faced this issue like I had, upgrading libraries, just rollback to the older version that works, and upgrade libraries one by one. I reproduced this issue after I upgraded @babel/core
. I just rolled back again and never touched babel again. Still works fine.
QUESTION
Using bokeh example of displaying mercator map here, how do I center the map around a specific set of GPS coordinates?
...ANSWER
Answered 2021-Jun-08 at 19:30After you got the tile_provider
you can change the default values like below:
QUESTION
In TTN they are no longer supporting large decoders.
I know what the decoder needs to be in TTN, it is in my DECODER function, but dont know how to execute it in the function node.
If you use inject Payload [1,2,3] RAW, it injects the raw payload that is msg.payload.payload.uplink_message.frm_payload into the decoder.
The DECODER needs to decode the raw payload and output it in msg.payload.uplink_message.decoded_payload
If you use inject Payload [1,2,3] Decoded in the flow you see how the end result needs to look like and the decoded msg.payload.uplink_message.decoded_payload
I am still learning JavaScript.
The code in the function node
...ANSWER
Answered 2021-Jun-07 at 14:02The question still really isn't clear, but if you want to use that code in a function node then I suggest the following:
Put that code into the "On Start" tab of the function node, but change the first line to the following:
QUESTION
I have the following problem:
I built an app that has 6 buttons and each of these buttons is assigned a CL region. I have a GPS track file that provides the app with locations and simulates a walk.
Now buttons should turn yellow when the region assigned to them is reached. It works so far, but the problem is that I don't know where to ask whether or not to reach the Region of Button. I tried .onAppear () {if ...}, but that is only triggered once and I need something that monitors the If statement all the time.
Is there anything?
Thanks in advance
here my code:
...ANSWER
Answered 2021-Jun-04 at 15:45You can use onChange
to monitor the status of RegionIndex
. It might look like this (replacing your onAppear
):
QUESTION
I'm not sure if the title makes sense, it was the best I could come up with, so here's my scenario.
I have an ASP.NET Core app that I'm using more as a shell and for DI configuration. In Startup
it adds a bunch of IHostedService
s as singletons, along with their dependencies, also as singletons, with minor exceptions for SqlConnection
and DbContext
which we'll get to later. The hosted services are groups of similar services that:
- Listen for incoming reports from GPS devices and put into a listening buffer.
- Parse items out of the listening buffer and put into a parsed buffer.
Eventually there's a single service that reads the parsed buffer and actually processes the parsed reports. It does this by passing the report it took out of the buffer to a handler and awaits for it to complete to move to the next. This has worked well for the past year, but it appears we're running into a scalability issue now because its processing one report at a time and the average time to process is 62ms on the server which includes the Dapper trip to the database to get the data needed and the EF Core trip to save changes.
If however the handler decides that a report's information requires triggering background jobs, then I suspect it takes 100ms or more to complete. Over time, the buffer fills up faster than the handler can process to the point of holding 10s if not 100s of thousands of reports until they can be processed. This is an issue because notifications are delayed and because it has the potential for data loss if the buffer is still full by the time the server restarts at midnight.
All that being said, I'm trying to figure out how to make the processing parallel. After lots of experimentation yesterday, I settled on using Parallel.ForEach
over the buffer using GetConsumingEnumerable()
. This works well, except for a weird behavior I don't know what to do about or even call. As the buffer is filled and the ForEach
is iterating over it it will begin to "chunk" the processing into ever increasing multiples of two. The size of the chunking is affected by the MaxDegreeOfParallelism
setting. For example (N# = Next # of reports in buffer):
- N3 = 1 at a time
- N6 = 2 at a time
- N12 = 4 at a time
- ...
- N6 = 1 at a time
- N12 = 2 at a time
- N24 = 4 at a time
- ...
- N12 = 1 at a time
- N24 = 2 at a time
- N48 = 4 at a time
- ...
- N24 = 1 at a time
- N48 = 2 at a time
- N96 = 4 at a time
- ...
This is arguably worse than the serial execution I have now because by the end of the day it will buffer and wait for, say, half a million reports before actually processing them.
Is there a way to fix this? I'm not very experienced with Parallel.ForEach
so from my point of view this is strange behavior. Ultimately I'm looking for a way to parallel process the reports as soon as they are in the buffer, so if there's other ways to accomplish this I'm all ears. This is roughly what I have for the code. The handler that processes the reports does use IServiceProvider
to create a scope and get an instance of SqlConnection
and DbContext
. Thanks in advance for any suggestions!
ANSWER
Answered 2021-Jun-03 at 17:46You can't use Parallel
methods with async
delegates - at least, not yet.
Since you already have a "pipeline" style of architecture, I recommend looking into TPL Dataflow. A single ActionBlock
may be all that you need, and once you have that working, other blocks in TPL Dataflow may replace other parts of your pipeline.
If you prefer to stick with your existing buffer, then you should use asynchronous concurrency instead of Parallel
:
QUESTION
I download an image by cURL on KOBO Collect server. The download is fine, however it overwrites the exif data in the image. I use Code Igniter 4.
I would like to get the exif data contained in the image before or after the download, with PHP or javascript. This data must be stored in my database (gps etc) My code :
...ANSWER
Answered 2021-Jun-03 at 14:09I finally found a solution. By using "copy" the exif data is not altered. Also insert username and password in url far auth.
QUESTION
Basic version info first:
...ANSWER
Answered 2021-Jun-02 at 16:39You can tell the index to sort its records already using geom
as 2D by means of using the function ST_Force2D
in the index creation, so that the database doesn't need to do it in query time:
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Install gps
You can use gps like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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