Description: 这是个GPS系统中，伪随机码捕获过程中，由于虚警概率的存在，所改进的捕获程序源代码-This is a GPS system, the pseudo-random code acquisition process, due to the existence of false alarm probability, the improved capture source code Platform: |
Size: 100352 |
Author:刘元涛 |
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Description: 对于门限电平的设置，常常用到虚警概率，但是恒虚警是根据电平的变化来设置虚警概率。-Threshold levels for the settings, usually used for false alarm probability, but CFAR is based on changes in level to set the false alarm probability. Platform: |
Size: 161792 |
Author:zn |
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Description: 将立体杂波图应用于气象杂波的CFAR处理，根据当前杂波环境的变化实时地产生杂内杂外标志，从而选择不同的信号处理支路处理当前气象杂波，提高了雷达的检测性能，降低了虚警概率。-Will be applied to three-dimensional meteorological clutter Clutter Map CFAR of treatment, according to the current clutter environment generated in real time with miscellaneous miscellaneous signs outside, so choose a different signal processing slip handle current weather clutter, improve radar detection performance and reduce the false alarm probability. Platform: |
Size: 173056 |
Author:zn |
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Description: 这是一个横虚惊概率的程序，也叫CFAR，可以实现雷达图像数据的恒虚警检测-This is a cross false alarm probability procedures, also known as CFAR, can realize the radar image data CFAR detection Platform: |
Size: 1024 |
Author:朱阳阳 |
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Description: A FFT-based partial matched filter (PMF)
acquisition threshold setting method for fast GPS acquisition is
presented. Normal distribution and numerical fitting technique
instead of real decision variable (DV) distribution are used in
derivation to approximate the threshold expression, and the
modification method for the threshold expression is also
presented. The threshold expression is based on the individual
FFT Doppler bin false alarm probability rather than the
convention whole detector false alarm probability. The
proposed threshold expression can be adjusted according to
the false alarm probability, the noncoherent accumulation
(NCA) length and the estimated noise variance. Furthermore
we discuss the implementation of zero-padding FFT with its
advantage and limitation. The performance is superior
compared to the reference method in terms of signal-to-noise
ratio (SNR) when detection and false alarm probabilities are
used as measurement criteria. Platform: |
Size: 280576 |
Author:zohreh |
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Description: Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced-Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced Platform: |
Size: 254976 |
Author:zohreh |
Hits:
Description: Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced-Presently FFT usage in GPS receivers has been a
topic of extensive study and many improved FFT-based
acquisition methods with averaging correlation
technique also have emerged. Although averaging
arithmetic can reduce the instant processing points of
FFT/IFFT, their noise performance is not promising. In
this paper a novel compress-sampling algorithm for
FFT-base GPS signal acquisition method is proposed.
It not only diminishes the size of FFT/IFFT core but
also enhances the noise immunity of receiver with its
“redundancy” structure. Simulation results of Matlab
testify that the computational complexity of the novel
algorithm has been efficiently suppressed to only
0.93 over the 2D search method in time domain. At
the same time the lower amplitude threshold obtained
from the novel method gets a lower false alarm
probability comparing with the direct DFT algorithm
with no compression. The noise immunity is enhanced Platform: |
Size: 87040 |
Author:zohreh |
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Description: 为了提高认知无线电中感知用户对授权用户(主用户) 的检测概率,提出一种新的基于循环
谱统计量的主用户信号检测算法. 该算法利用循环谱离散频域平滑方法,对信号的循环谱在循环频
率处建立合理的检测统计量,然后求解得到对应不同虚警概率的判决门限,以使感知用户能检测信
噪比更低的授权用户信号.-To increase the detection probability of sensing users for licenced users (primary signals) in
the cognitive radio , it put s forward a new primary users signal method based on cyclic spect rum statis2
tics. By using discrete f requency smoothing of cyclic spect rum , this algorithm establishes the reason2
able detection statistics on the cyclic f requency of signal cyclic spect rum , then solves and obtains the
decision threshold correspond to different false alarm probability , as a result , making the sensing users
can detect licenced users signal under lower signal in noise ratio (SNR) . Platform: |
Size: 486400 |
Author:刘德龙 |
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Description: 本程序给出了认知无线电中的能量检测方法，并实现了在不同的虚警概率下的检测性能比较。-This procedure gives the method of energy detection of cognitive radio , and the comparison of detection performance at different false alarm probability . Platform: |
Size: 1024 |
Author:张欢欢 |
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Description: Matlab能量检测在rayleigh衰落信道下的性能仿真,主要为虚警概率和误警概率的关系-Matlab energy detection in rayleigh fading channel the performance simulation, mainly for the false alarm probability and the relationship between the probability of false alarm Platform: |
Size: 5120 |
Author: 苗苗 |
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Description: 认知无线电频谱感知匹配滤波器检测仿真，选用FM信号，分析了虚警概率-Matched filter spectrum sensing cognitive radio simulation testing, the choice of FM signals, analysis of the probability of false alarm Platform: |
Size: 1024 |
Author:秦楠楠 |
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Description: matlab环境下单个节点能量感知的检测概率与虚警概率-energy of a single node under matlab perceived probability of detection and false alarm probability Platform: |
Size: 7168 |
Author:何智锋 |
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Search - false alarm probability