System and method for space control and remote monitoring

• US 8,115,472 B2
• Filed: 10/24/2008
• Issued: 02/14/2012
• Est. Priority Date: 10/24/2007
• Status: Active Grant

• Current Assignee: Radical Development Holding S.A.
• Original Assignee: Kirsen Technologies Corporation, Inc.
• Inventors: Mostov, Kirill
• Primary Examiner(s): Nguyen, Hoai-An D
• Application Number:
  US12/258,259
• Publication Number:
  US 20100027737A1
• Time in Patent Office: 1,208 Days
• Field of Search: 324/76.21, 324/76.19, 324/76.12, 324/76.11, 324/635, 324/644, 324/662, 324/671, 324/699, 324/716, 342/27, 342/107, 342/134, 342/137, 342/118, 342/128
• US Class Current: 324/76.21
• CPC Class Codes: A61B 5/02028 Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/05 Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves impedance plethysmography A61B5/0295; measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: G01R 23/16 Spectrum analysis; Fourier analysis
• CPC Class Codes: G01S 13/345 using triangular modulation
• CPC Class Codes: G01S 13/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S13/46
• CPC Class Codes: G01S 13/887 for detection of concealed objects, e.g. contraband or weapons
• CPC Class Codes: G01S 13/888 through wall detection
• CPC Class Codes: G01S 7/024 using polarisation effects in waveguides H01P1/165; for aerials H01Q, e.g. H01Q15/22, H01Q15/24, H01Q19/195
• CPC Class Codes: G01S 7/411 Identification of targets based on measurements of radar reflectivity G01S7/415 takes precedence
• CPC Class Codes: G01S 7/415 Identification of targets based on measurements of movement associated with the target

Abstract

A system and method for space control and remote monitoring is disclosed. According to one embodiment, a frequency modulated signal is emitted from a radioscopic device having an antenna. The frequency of the reflected signal from a target is compared with the emitted frequency modulated signal to obtain a low-frequency signal. The low-frequency signal is processed to form signal pulsations spectrum using a fast Fourier transform. Each spectrum frequency represents a distance to the target.

Claims

1. A method, comprising:

emitting a frequency modulated signal from a radioscopic device having an antenna, the radioscopic device scanning a plurality of targets simultaneously within a measurement range of the radioscopic device;

receiving a reflected signal from a target of the plurality of targets;

subtracting the frequency modulated signal with the reflected signal for obtaining a low-frequency signal;

processing the low-frequency signal using fast Fourier transform (FFT);

forming signal pulsations spectrum based on the results of the FFT, wherein each spectrum frequency represents a distance to the target;

determining the distance to the target;

determining psycho-physiological parameters of the target, wherein determining psycho-physiological parameters of the target comprises analyzing a change in the effective radar cross section and calculating left ventricular ejection time (LVET) of the target;

identifying the target as an anomalic target of the plurality of targets based on the psycho-physiological parameters; and

determining a hostile intent of the target based on the psycho-physiological parameters.

2. The method of claim 1, further comprising:

monitoring the low-frequency signal at a time interval;

saving the low-frequency signal in a memory;

updating the distance to the target; and

determining whether the target is moving.

3. The method of claim 1, wherein determining psycho-physiological parameters of the target comprises:

analyzing the low-frequency signal of the target; and

detecting the presence of heart beat and breath wave.

4. The method of claim 3, further comprising determining whether the target is a live subject.

5. The method of claim 1, further comprising:

receiving the reflected signal with at least two antennae;

analyzing the amplitude of the low-frequency signal; and

determining an azimuth of the target based on a ratio of the amplitudes of the reflected signal at the two antennae.

6. The method of claim 1, further comprising:

scanning the radioscopic device with a narrow diagram of orientation of the antenna; and

determining an azimuth of the target, wherein the azimuth is equal to the rotation angle of the radioscopic device.

7. The method of claim 6, wherein the scanning is realized through manual turn of the radioscopic device.

8. The method of claim 1, further comprising:

receiving the reflected signal with at least two antennae with orthogonal polarization;

calculating depolarization coefficient using the reflected signal;

analyzing the depolarization coefficient of the reflected signal; and

detecting a weapon based on the depolarization coefficient, wherein the weapon is detected if the depolarization coefficient is lower than a threshold value.

9. The method of claim 8, wherein only live subjects are analyzed for weapon detection.

10. The method of claim 4, wherein determining a hostile intent of the live subject is based on one of analyzed signals of LVET, perspiration, heart rate, blood pressure, vasomotor fluctuations data, muscle tone and rush of blood to the organs.

11. The method of claim 4, wherein determining psycho-physiological parameters of the target further comprises:

analyzing an increase in the intensity of the reflected signal from the skin surface of the live subject; and

calculating perspiration from the live subject.

12. The method of claim 4, wherein determining psycho-physiological parameters of the target further comprises:

analyzing changes in the effective radar cross section using the amplitudes of the reflected signal; and

determining arterial blood pressure of the live subject.

13. The method of claim 4, wherein determining psycho-physiological parameters of the target further comprises:

analyzing fluctuations of amplitudes of the received signal caused by changes in the effective radar cross section; and

calculating muscle tone of the live subject.

14. A radioscopic device for remote detection comprising:

a transmitting antenna;

a receiving antenna;

a high frequency signal processing module;

digital signal processing module; and

display and a power supply, wherein the high frequency signal processing module and digital signal processing module are configured to

receive a reflected signal from a target of a plurality of targets simultaneously within a measurement range of the radioscopic device;

subtract the frequency modulated signal with the reflected signal for obtaining a low-frequency signal;

process the low-frequency signal using fast Fourier transform (FFT);

form signal pulsations spectrum based on the results of the FFT, wherein each spectrum frequency represents a distance to the target;

determine the distance to the target;

determine psycho-physiological parameters of the target, wherein determining psycho-physiological parameters of the target comprises analyzing a change in the effective radar cross section and calculating left ventricular ejection time (LVET) of the target;

identify the target as an anomalic target of the plurality of targets based on the psycho-physiological parameters; and

determine a hostile intent of the target based on the psycho-physiological parameters.

15. The device from claim 14, wherein the transmitting antenna has a narrow diagram of orientation and a manual scanning module for determining an azimuth of a target.

16. The device from claim 14, wherein the radioscopic device has at least two receiving antennae to determine an azimuth of a target based on a triangular methods where distance to the target from each antenna is calculated using wave phase.

17. The device from claim 16, wherein the two receiving antennae have orthogonal polarization to calculate depolarization of the target.

18. The device from claim 14, wherein the radioscopic device has at least three receiving antennae, two of the three receiving antennae have orthogonal polarization.

19. The device from claim 14 further comprising a module for compensating vibration.

20. The device from claim 19, wherein the module comprises an accelerometer and/or a magnetic sensor.