Human and animal non-contact detection distinguishing method based on IR-UWB biological radar signals

A bio-radar, non-contact technology, applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve complex and diverse problems, achieve high recognition accuracy, accurate gain compensation, and reduce missed judgments rate effect

Active Publication Date: 2020-03-13
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Claims
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Problems solved by technology

However, the actual problems encountered in search and rescue operations after earthquakes and other disasters are complex and diverse

Method used

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  • Human and animal non-contact detection distinguishing method based on IR-UWB biological radar signals
  • Human and animal non-contact detection distinguishing method based on IR-UWB biological radar signals
  • Human and animal non-contact detection distinguishing method based on IR-UWB biological radar signals

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Embodiment Construction

[0053] First the technical terms that appear in the present invention are explained:

[0054] Biological radar technology: including continuous wave (Continuous Wave, CW) radar and ultra-wideband radar (Ultra-wideband, UWB), among them, ultra-wideband biological radar has become the current The mainstream of biological radar technology research. Impulse-radio Ultra-wideband (IR-UWB) has become a research hotspot in the field of post-disaster search and rescue because of its excellent performance and simple structure. Therefore, IR-UWB is used to distinguish humans and animals. Bio-radar system to achieve.

[0055] Slow time: The detection time of the radar to the target, the unit is second (s).

[0056] Fast Time: The time taken for the pulse to propagate, in nanoseconds (ns).

[0057] Such as image 3 As shown, in actual detection, the echo signal sampled by IR-UWB radar is sampled, integrated and amplified, and then stored in a two-dimensional matrix R(m,n), where m is a...

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Abstract

The invention belongs to the technical field of biological radar, and discloses a human and animal non-contact detection distinguishing method based on IR-UWB biological radar signals. The method comprises the steps: 1, a transmitting antenna of the IR-UWB biological radar transmits radar pulses to a target, the radar pulses are reflected by the target, and radar echo signals E(m, n) are obtainedthrough a receiving antenna of the IR-UWB biological radar; 2, signal preprocessing is carried out on the radar echo signals E(m, n) obtained in the step 1 to obtain energy signals E6(l); 3, the direct wave of the E6(l) obtained in the step 2 is removed to obtain energy signals E7(l), and then the maximum amplitude E7max of the E7(l) and the corresponding position lmax of the maximum in the slow time direction are then obtained; and step 4, a peak-background ratio VEtoB of E7(l) is calculated, then an average correlation coefficient rm is calculated, and the type of the target is obtained through a target detection distinguishing rule.

Description

technical field [0001] The invention belongs to the technical field of biological radar, and in particular relates to a method for non-contact detection and distinction between humans and animals based on IR-UWB biological radar signals. Background technique [0002] Bio-radar is a technology that extracts signals related to vital signs from radar echoes, non-contact, long-distance, and can penetrate a certain medium to realize the functions of life detection, vital sign monitoring, life imaging and positioning. The principle is that the radar emits electromagnetic waves to the human body. The electromagnetic waves are modulated by human physiological activities such as breathing, heartbeat, and body movement, and then reflected back to the radar receiving antenna. Physiological and biological information, including physiological parameters, waveforms, images, target locations, etc. Because of the above advantages, bio-radar technology has shown great advantages and broad a...

Claims

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Application Information

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IPC IPC(8): G01S13/88
CPCG01S13/88
Inventor 张杨王健琪梁福来李钊吕昊张自启于霄薛慧君焦腾
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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