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kopia lustrzana https://github.com/proto17/dji_droneid
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193 Commity (main)

Autor SHA1 Wiadomość Data
proto17 6ecbd20bdb
Working on a new README.md page 2022-10-31 00:06:29 -04:00
proto17 5f1a468159
Create README.md 2022-09-22 22:56:45 -04:00
proto17 fd96323c50
Create LICENSE 2022-09-06 08:47:02 -04:00
proto17 4d83bd6267
Update README.md 
Fixed list of frequencies that DroneID appears on
 2022-09-05 16:56:00 -04:00
proto17 9e2bd4fe55
Removed unnecessary seek into the ZC sym for CFO 
It was pointed out that the additional 6 sample seek wasn't necessary.  Tested with a HackRF and DJI Mini 2 to validate.
 2022-09-05 12:23:18 -04:00
David Protzman a58848eaff Merge branch 'main' of https://github.com/proto17/dji_droneid into main 2022-08-28 09:36:00 -04:00
David Protzman 5f319c4cc4 Moved files around to prevent clutter 
Files that are not currently being used have been moved to unused_scripts
 2022-08-28 09:34:45 -04:00
David Protzman deb0be39c2 Removed normalization requirement 
There's no reason it must be normalized, and Octave doesn't support normalization with xcorr
 2022-08-28 09:21:18 -04:00
David Protzman 363ff70239 Small change in how the symbols are extracted 2022-08-28 01:17:33 -04:00
David Protzman 3c77c3e6a8 Added function that finds the start time offset based on the cyclic prefix 2022-08-28 01:16:23 -04:00
David Protzman a731a12660 *Lots* of changes 
These changes have been over several months and can't really be split apart meaningfully :\
 2022-08-28 01:10:24 -04:00
David Protzman fe761e9473 The equalizer takes care of global phase offsets 2022-08-28 01:08:25 -04:00
David Protzman 95bc95e236 Added integer frequency offset correction logic 2022-08-28 01:07:46 -04:00
David Protzman 339f1fcae9 Setting title of figure 43 2022-08-28 01:07:24 -04:00
David Protzman ef608611d6 Now plotting the power spectrum with averaging and correct freq range 2022-08-28 01:06:39 -04:00
David Protzman 779e170785 Fixed issue with plots always showing up in burst extractor 2022-08-28 01:04:25 -04:00
David Protzman 9e313dd7b4 Removed example file values, moved some parameters 2022-08-28 01:00:42 -04:00
proto17 7fa0fc4988
Create est_integer_freq_offset.m 2022-05-18 23:40:07 -04:00
proto17 a170391a9e
Create test_integer_freq_offset.m 2022-05-18 23:30:40 -04:00
proto17 ec1ca41c6b
Create cyclic_prefix_sto_test.m 2022-05-17 22:37:01 -04:00
proto17 95863425aa
Create ifo_test.m 2022-05-16 23:19:27 -04:00
proto17 ca5fada2d0
Update README.md 2022-04-30 12:27:46 -04:00
proto17 f312a1cc14
Update README.md 2022-04-30 12:26:42 -04:00
proto17 b80be8d9b8
Update README.md 2022-04-30 12:25:51 -04:00
David Protzman 9e2aafab50 Moved the offset index back 1 FFT size 
This is because the new xcorr function is forward looking vs reverse looking
 2022-04-30 12:00:04 -04:00
David Protzman 46b2c4dad5 Warning the user if correlation threshold > 1.0 
Now that the xcorr is truly normalized, there's no good reason to go above 1.0
 2022-04-30 11:59:32 -04:00
David Protzman 388d4acd7b Erroring if correlation threshold < 0 2022-04-30 11:59:05 -04:00
David Protzman 4309068874 Added comments 2022-04-30 11:58:21 -04:00
David Protzman 60ea5e6f3f Shrunk the peak search window from 100 to 10 
No reason to look that far around for the peak of a ZC sequence correlation
 2022-04-30 11:58:02 -04:00
David Protzman b442f73baf Now using a truly normalized cross correlation 2022-04-30 11:57:09 -04:00
David Protzman e4a49306b2 Added running sum for abs squared 2022-04-28 23:04:50 -04:00
David Protzman 9daf1ecaab Added missing update to `prev_val` 2022-04-28 22:46:08 -04:00
David Protzman 1d2698c0af Added a new normalized xcorr function that's faster 
Does trade some accuracy in the process
 2022-04-28 22:43:57 -04:00
David Protzman 63e26007f8 Merge branch 'main' of github.com:proto17/dji_droneid into main 2022-04-26 22:25:44 -04:00
David Protzman c173de56b4 Added default sample type 2022-04-26 22:18:38 -04:00
David Protzman 5e800d24d0 Making use of get_bytes_per_sample function in convert file type 2022-04-26 22:17:53 -04:00
David Protzman 38352ec47b Casting bursts to double complex 2022-04-26 22:17:17 -04:00
David Protzman 43a19fe44a Added comments 2022-04-26 22:16:08 -04:00
David Protzman 863bf910be Added varargs for extract bursts and find zc seq funcs 2022-04-26 22:15:47 -04:00
David Protzman 94ee1b3602 Updated get_sample_count_of_file to use new function for num of bytes/sample 2022-04-26 21:28:59 -04:00
David Protzman 3213764d68 Added function to get the number of bytes in a numeric type 2022-04-26 21:23:16 -04:00
David Protzman df18420eaf Fixed bug where floating point samples came back as 'single' 
This would cause lots of functions to fail since a lot of the dsp functions rely on doubles
 2022-04-26 21:12:32 -04:00
proto17 6856680800
Merge pull request #2 from hb9fxq/patch-1 
abandon burst at invalid left_idx (0)
 2022-04-25 06:42:36 -04:00
Frank Werner-Krippendorf 62fd7eda90
abandon burst at invalid left_idx (0) 2022-04-25 08:44:47 +02:00
David Protzman d8f7b73c37 Added function to convert between IQ formats 2022-04-24 16:57:20 -04:00
David Protzman 6c875b5014 Had to change dimensions on freq correction vector 
This happened due to a change in the read_complex_floats function
 2022-04-24 16:45:07 -04:00
David Protzman 8fe194bcd6 Added script to normalize an input vector to -1.0 to 1.0 2022-04-24 16:44:33 -04:00
David Protzman 0544182553 Now normalizing the IFFT outputs 2022-04-24 16:44:07 -04:00
David Protzman 3b1448497b Now just calling write_complex 2022-04-24 16:42:40 -04:00
David Protzman 9d259ca6fc Converted create_burst to a function 2022-04-24 15:02:38 -04:00