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- improved noise estimation

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git-svn-id: http://moon:8086/svn/software/trunk/projects/GnuRadio@435 b431acfa-c32f-4a4a-93f1-934dc6c82436
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jens
2019-05-21 18:43:19 +00:00
parent e523b779d3
commit 1dfc16c0da
1 changed files with 12 additions and 3 deletions
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matlab/peak_detect.m
+12 -3
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@@ -35,14 +35,14 @@ ks = 0.5;
pa = 0.3; pa = 0.3;
d_max = 30; d_max = 30;
am = 0.1; am = 0.02;
as = 0.9; as = 0.9;
Ad = 20; Ad = 20;
Cm = 0; Cm = 0;
s = zeros(1, Nh); s = zeros(1, Nh);
a = zeros(1, Nh); a = zeros(1, Nh);
Xm = -40*ones(1, Nh); Xm = -120*ones(1, Nh);
Xs = zeros(1, Nh); Xs = zeros(1, Nh);
peak_count = zeros(1, Nh); peak_count = zeros(1, Nh);
@@ -84,8 +84,17 @@ for k=1:numFrames
peak_count = gate_peak.*peak_count + gate_peak; peak_count = gate_peak.*peak_count + gate_peak;
peak_cand = peak_count > 0; peak_cand = peak_count > 0;
% Update Xm at no-peak bins % Update Xm at no-peak bins
Xm = (1-gate_upd) .* ((1-am)*Xm + am*X) + gate_upd.*Xm; Xm = (1-gate_upd) .* ((1-am)*Xm + am*X) + gate_upd.*Xm*0.7;
last = Xm(1);
for n=2:Nh,
if gate_upd(n) == 0
last = Xm(n);
else
Xm(n) = last;
end
end
% Filtering % Filtering
if 0 if 0
Nhf = 21; Nhf = 21;