Radar apparatus provided with transmitter means (1), rotating antenna means (2) and receiver means (3) for the transmission per burst and the processing in a video processor of radar echo signals. The video-processor comprises moving target detection unit (4) provided with a doppler filter ...
The limiting CFAR scheme is used when the bandwidth of the interference is much greater than that of the target echo signal, such as with wideband noise jamming and with impulse jamming. In this scheme, except the wideband interference, signal plus high amplitude impulse interface is amplified ...
A light splitter can enable an echo laser signal to be divided into two signals, wherein each signal is detected by one Gm-APD single-photon detector. An AND judgment gate compares the triggering time of the two Gm-APD single-photon detectors in real time. If the two Gm-APD single-...
This paper introduces a method to reduce false alarms in wavelength-resolution synthetic aperture radar (SAR) change detection and aims at very high frequency-band systems like the Coherent All Radio Band System (CARABAS). The false alarms are usually caused by the elongated structures, such as ...
The exploitation means are capable of considering as a false alarm any echo received with a level below a selected threshold in one of the reception channels.收藏 引用 批量引用 报错 分享 全部来源 求助全文 掌桥科研 相似文献A radar device has regulation of false alarm on diffuse...
For resisting active and passive jamming,echo intensity is calculated and compared on time domain,and for suppressing clutter,constant false alarm rate handling is applied on frequency domain. 提出了在时域上通过计算和比较回波信号的强度,达到对抗有源/无源人工干扰的目的,在频域上应用恒虚警处理技术抑制杂...
Smallest of CFAR Detector Based on Automatic Censored Algorithm in the Presence of Reverberation; 混响背景下基于自动删除算法的最小选择恒虚警检测器 更多例句>> 3) constant false alarm 恒虚警 1. This paper introduces several classical algorithms suitable for radar signal detection, based on which a...
The control of false alarm rate (FAR) has consistently been a key concern in the domain of radar target detection. Early non-coherent, short-term cumulative detection methods based on radar echo amplitude and power information typically make certain assumptions about clutter background. Such methods...
When the SCR is 0dB, the target echo gray level is proximate to the sea clutter, and the target is prone to being masked. In this case, in contrast to the second-best STAF-RCBD, the proposed method has enhanced the detection rate of the first and fourth targets by 11.39% and 11.11%...
(Fig.5b), rendering it useful as a versatile probe for various applications. Figure5c, d show an optical-resolution photoacoustic microscopy image of an in vivo mouse ear and a 3D high-resolution pulse-echo ultrasound images of an ex vivo porcine aorta sample, both obtained using this ...