主要内容

Detection

Target detection, CFAR, 2-D CFAR, ROC curves, sonar equation

分阶段数组系统Toolbox™包括系统对象和Simulink金宝app®blocks for performing matched filtering, constant false alarm rate (CFAR) detection in one or two dimensions, stretch-processing pulse compression and coherent and noncoherent pulse integration. Utility functions let you compute and visualize receiver operating characteristic (ROC) curves for various signal-to-noise ratio (SNR) levels or probabilities of false alarm. A suite of functions and an app let you perform radar analysis using the radar equation. You can estimate, for example, received SNR or maximum target detection range. A similar set of capabilities are provided for the sonar equation. Blake charts let you visualize radar coverage.

Objects

AlphaBetaFilter Alpha-beta filter for object tracking
phased.CFARDetector 恒定的错误警报率（CFAR）检测器
分阶段。cfardetector2d Two-dimensional CFAR detector
phased.MatchedFilter 匹配的过滤器
phased.StretchProcessor 拉伸处理器为林ear FM waveform
phased.TimeVaryingGain Time varying gain control

Blocks

CFAR检测器 恒定的错误警报率（CFAR）检测器
2-D CFAR Detector Two-dimensional constant false alarm rate (CFAR) detector
Stretch Processor 拉伸处理器为林ear FM waveforms
Time Varying Gain Time varying gain (TVG) control
脉冲积分器 Coherent or noncoherent pulse integration
Dechirp Mixer Dechirping operation on input signal
匹配的过滤器 匹配的过滤器

Functions

expand all

albersheim 需要使用Albersheim方程的SNR
dechirp 在FMCW信号上执行DeChirp操作
npwgnthresh 在白色高斯噪声中检测信号的SNR阈值
pulsint Pulse integration
ROCPFA 接收器操作特性曲线通过false-ararm概率
rocsnr 接收器操作特性曲线由SNR
shnidman 需要使用shnidman方程的SNR
bw2rangeres Convert bandwidth to range resolution
巧合 Coincidence algorithm
CRT 中国剩余定理
Freq2Wavelen Convert frequency to wavelength
iscoprime 检查企业关系
Physconst Physical constants
rangeres2bw Convert range resolution to bandwidth
wavelen2freq 将波长转换为频率
bw2rangeres Convert bandwidth to range resolution
Freq2Wavelen Convert frequency to wavelength
Physconst Physical constants
rangeres2bw Convert range resolution to bandwidth
range2tl Compute underwater sound transmission loss from range
Sonareqsl Compute source level using the sonar equation
sonareqsnr 使用声纳方程计算SNR
Sonareqtl Compute transmission loss using the sonar equation
tl2range 计算范围从水下传输损失
wavelen2freq 将波长转换为频率
rangeMigrationSFM 划分FM波形的范围迁移图像形成算法
rangemigrationlfm 线性FM波形的范围迁移图像形成算法
rangemigrationfmcw Range migration image formation algorithm for frequency-modulated CW waveform

Apps

声纳方程Calculator Estimate maximum range, SNR, transmission loss and source level of a sonar system
Sensor Array Analyzer Analyze beam patterns and performance characteristics of linear, planar, 3-D, and arbitrary sensor arrays

Topics

检测和评估

  • Neyman-Pearson Hypothesis Testing
    In phased-array applications, you sometimes need to decide between two competing hypotheses to determine the reality underlying the data the array receives.
  • 匹配的过滤器ing
    匹配的过滤器ing increases SNR and improves detection.
  • 拉伸处理
    Stretch processing, also known as deramping or dechirping, is an alternative to matched filtering.
  • FMCW Range Estimation
    FMCW range estimation dechirps the received signal, extracts beat frequencies, and computes the target range.
  • Range-Doppler Response
    Perform range-Doppler processing and visualize range-Doppler maps.
  • Constant False-Alarm Rate (CFAR) Detectors
    CFAR detectors apply the Neyman-Pearson criterion to target detection. The detectors estimate noise statistics from data.

Phased Array Conventions

声纳方程

  • 声纳方程
    The sonar equation is used in underwater signal processing to relate received signal power to transmitted signal power for one-way or two-way sound propagation.
  • Doppler Effect for Sound
    多普勒效应是由于源或接收器的运动或两者的运动而观察到的源频率的变化。