Re: use of gr-specest for direction finding of a 1X2 MIMO system

hello,
I downloaded and build gr-specest block from github site "
https://github.com/kit-cel/gr-specest" into gnu radio 3.6.5.1, But while
make test i got the following result:

Test project /home/testbed/Downloads/gr-specest-master/build
Start 1: qa_specest_arburg_impl
1/15 Test #1: qa_specest_arburg_impl … Passed
0.54
sec
Start 2: qa_specest_cyclo_fam_calcspectrum_impl
2/15 Test #2: qa_specest_cyclo_fam_calcspectrum_impl … Passed
0.07
sec
Start 3: qa_specest_esprit_fortran_impl
3/15 Test #3: qa_specest_esprit_fortran_impl … Passed
0.24
sec
Start 4: qa_specest_burg
4/15 Test #4: qa_specest_burg … Passed
1.95
sec
Start 5: qa_specest_cyclo_fam
5/15 Test #5: qa_specest_cyclo_fam …***Failed
0.55
sec
Start 6: qa_specest_esprit
6/15 Test #6: qa_specest_esprit … Passed
0.31
sec
Start 7: qa_specest_esprit_spectrum_vcf
7/15 Test #7: qa_specest_esprit_spectrum_vcf …***Failed
0.30
sec
Start 8: qa_specest_esprit_vcf
8/15 Test #8: qa_specest_esprit_vcf … Passed
2.44
sec
Start 9: qa_specest_fcov
9/15 Test #9: qa_specest_fcov … Passed
0.29
sec
Start 10: qa_specest_fmcov
10/15 Test #10: qa_specest_fmcov … Passed
0.29
sec
Start 11: qa_specest_gendpss
11/15 Test #11: qa_specest_gendpss … Passed
0.27
sec
Start 12: qa_specest_mtm
12/15 Test #12: qa_specest_mtm … Passed
0.82
sec
Start 13: qa_specest_vectormanip
13/15 Test #13: qa_specest_vectormanip … Passed
0.29
sec
Start 14: qa_specest_welch
14/15 Test #14: qa_specest_welch …***Failed
0.29
sec
Start 15: qa_specest_welchsp
15/15 Test #15: qa_specest_welchsp …***Failed
0.33
sec

73% tests passed, 4 tests failed out of 15

Total Test time (real) = 8.98 sec

The following tests FAILED:
5 - qa_specest_cyclo_fam (Failed)
7 - qa_specest_esprit_spectrum_vcf (Failed)
14 - qa_specest_welch (Failed)
15 - qa_specest_welchsp (Failed)
Errors while running CTest
make: *** [test] Error 8

futhur could i get any documentation which could teel me how to use root
music avaliable gr-spect for the purpose of direction finding. currently
i
have one transmitter and two synchronized receives and i intend to find
DOA
of my transmitter.

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Hi Chandan,

the specest (spectral estimation toolbox) uses MUSIC to estimate the
spectrum; it does that by using the MUSIC algorithm on an unmodified
autocorrelation matrix estimate of one input sample stream; if you
supply different data, MUSIC will estimate different things.
You’ll find the algorithm in specest_music_armadillo_impl.cc; I
believe it’s easy to understand if you’ve done MUSIC before.

As a side note: Benchmarks have shown that for small signal spaces (in
your case: few incident waves from different directions at once), the
ESPRIT algorithm (also in gr_specest!) performs slightly better, and
you get the “strongest” frequencies/directions in a vector, and don’t
have to search the MUSIC pseudospectrum for local maxima.

Greetings,
Marcus

On 09.03.2014 12:12, Chandan Pradhan wrote:

qa_specest_esprit_fortran_impl … Passed 0.24 sec
Start 9: qa_specest_fcov 9/15 Test #9: qa_specest_fcov
…***Failed 0.29 sec Start 15:
CTest make: *** [test] Error 8
[email protected]wrote:

_______________________________________________ Discuss-gnuradio
mailing list [email protected]
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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