WIPO IPC: Internet Publication
... indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified. ...
... indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified. ...
Lecture 4. Ramp and Signal Generation
... (DSP). Digital electronics has opened many new application areas for electronics. This has increased the need for processing analog signals because our world is essentially analog and the signals coming from it are analog. DT021/4 Electronic Systems – Lecture 4: Ramp & Signal Generation ...
... (DSP). Digital electronics has opened many new application areas for electronics. This has increased the need for processing analog signals because our world is essentially analog and the signals coming from it are analog. DT021/4 Electronic Systems – Lecture 4: Ramp & Signal Generation ...
導 論
... 1. Instrumental artifacts 2. Biological artifacts 3. Analysis artifacts ★ 1.3.6 Auditory System ...
... 1. Instrumental artifacts 2. Biological artifacts 3. Analysis artifacts ★ 1.3.6 Auditory System ...
Basics on Radar Cross Section Reduction Measurements of Simple
... important to identify targets such as aircraft, missiles, rockets, ships and other objects, with the purpose of improving or rendering difficult their radar visibility in various frequency ranges. The use of RCS measurements of targets have expanded to more than solely military applications in the i ...
... important to identify targets such as aircraft, missiles, rockets, ships and other objects, with the purpose of improving or rendering difficult their radar visibility in various frequency ranges. The use of RCS measurements of targets have expanded to more than solely military applications in the i ...
12 13 Examples of applying 43 + 10 log (P) to calculate
... spurious domains occurs at frequencies that are separated from the centre frequency of the emission by the values shown in Table 1. In general, the boundary, on either side of the centre frequency, occurs at a separation of 250% of the necessary bandwidth, or at 2.5 BN, as shown in Table 1. For most ...
... spurious domains occurs at frequencies that are separated from the centre frequency of the emission by the values shown in Table 1. In general, the boundary, on either side of the centre frequency, occurs at a separation of 250% of the necessary bandwidth, or at 2.5 BN, as shown in Table 1. For most ...
Simulation of 3D Laser Radar Systems
... in the sampled intensity (speckle) distribution and A is the mean number of photoelectrons in the measurement interval [9]. Generally, d/A >> 1 for Lincoln Laboratory ladars, since we design them so that d >> 1 and operate them such that A < 1. The value of d is large because the instantaneous field ...
... in the sampled intensity (speckle) distribution and A is the mean number of photoelectrons in the measurement interval [9]. Generally, d/A >> 1 for Lincoln Laboratory ladars, since we design them so that d >> 1 and operate them such that A < 1. The value of d is large because the instantaneous field ...
Radio Receivers
... high end of AM spectrum. The local oscillator has additional padder capacitor cp in series with the tuning coil that compensates for minor tracking errors at the low end of AM spectrum. With three point tracking the tracking error can be adjusted from 0Hz at approximately 600KHz, 950KHz AND 1500KHz ...
... high end of AM spectrum. The local oscillator has additional padder capacitor cp in series with the tuning coil that compensates for minor tracking errors at the low end of AM spectrum. With three point tracking the tracking error can be adjusted from 0Hz at approximately 600KHz, 950KHz AND 1500KHz ...
ELECTROMAGNETIC PULSE PROPAGATION OVER
... domains measured by tens of thousands wavelengths. As an example, we consider a problem of target altitude determination from overland radar data [23]. This work has been done in collaboration with the Institute for High-Frequency Technique (IHF), Stuttgart University. Preliminary results appeared a ...
... domains measured by tens of thousands wavelengths. As an example, we consider a problem of target altitude determination from overland radar data [23]. This work has been done in collaboration with the Institute for High-Frequency Technique (IHF), Stuttgart University. Preliminary results appeared a ...
- Sacramento
... Continuous Wave Doppler radars. This type of radar transmits a signal at a single frequency and, if the target is moving, it receives a reflection of the same signal at slightly higher or lower frequency. From this frequency shift, the speed of the monitored object can be deduced. Another type of ra ...
... Continuous Wave Doppler radars. This type of radar transmits a signal at a single frequency and, if the target is moving, it receives a reflection of the same signal at slightly higher or lower frequency. From this frequency shift, the speed of the monitored object can be deduced. Another type of ra ...
Chapter 1 Time Interval Measurement Literature Review
... The transmitted pulses from the level measurement instrument are electromagnetic waves and are travelling at close to the speed of light. Since these pulses only have to travel a very short distance to the target medium (a maximum of 20m there and back), the time interval (TI) between the transmitte ...
... The transmitted pulses from the level measurement instrument are electromagnetic waves and are travelling at close to the speed of light. Since these pulses only have to travel a very short distance to the target medium (a maximum of 20m there and back), the time interval (TI) between the transmitte ...
localization - Columbia CS
... Network topology: cluster head vs. local determination What kind of coordination among nodes? ...
... Network topology: cluster head vs. local determination What kind of coordination among nodes? ...
1 INTRODUCTION
... 4.5.7 Digital Sinusoidal Oscilatators. 4.6 Inverse Systems and Deconvolution 4.6.1 Invertibility of Linear Time-Invariant systems. 4.6.2 Minimum-Phase. Maximum-Phase, and Mixed-Phase Systems. 4.6.3 System Identification and Deconvolution, 4.6.4 Homomorphic Deconvolution. 5 THE DISCRETE FOURIER TRANS ...
... 4.5.7 Digital Sinusoidal Oscilatators. 4.6 Inverse Systems and Deconvolution 4.6.1 Invertibility of Linear Time-Invariant systems. 4.6.2 Minimum-Phase. Maximum-Phase, and Mixed-Phase Systems. 4.6.3 System Identification and Deconvolution, 4.6.4 Homomorphic Deconvolution. 5 THE DISCRETE FOURIER TRANS ...
Ultrasonic NDT based on Lamb waves
... in health monitoring. In the aeronautic field, there is a need for more inspection. It would be particularly beneficial if the NDT system could be embedded in the aircraft part to be monitored. In that case, the monitoring strategy would not be necessarily based on regular visit and conventional NDT ...
... in health monitoring. In the aeronautic field, there is a need for more inspection. It would be particularly beneficial if the NDT system could be embedded in the aircraft part to be monitored. In that case, the monitoring strategy would not be necessarily based on regular visit and conventional NDT ...
6.013 Electromagnetics and Applications, Chapter 11
... seconds in an arc minute, and 60 arc minutes in a degree. This is adequate to resolve an automobile on the moon. Unfortunately mirror surface imperfections, focus misplacement, and atmospheric turbulence limit the actual angular resolution of Palomar to ~1 arc second on the very best nights; normal ...
... seconds in an arc minute, and 60 arc minutes in a degree. This is adequate to resolve an automobile on the moon. Unfortunately mirror surface imperfections, focus misplacement, and atmospheric turbulence limit the actual angular resolution of Palomar to ~1 arc second on the very best nights; normal ...
Acoustic propagation affected by environmental parameters in
... to a decrease in reflected acoustic rays. Under these conditions propagation to large distances will be associated with o large losses in acoustic energy. Critical angle of propagation determined theoretically is found to be ±11.42 with respect to horizontal representing low order trapped modes. SSP ...
... to a decrease in reflected acoustic rays. Under these conditions propagation to large distances will be associated with o large losses in acoustic energy. Critical angle of propagation determined theoretically is found to be ±11.42 with respect to horizontal representing low order trapped modes. SSP ...
Chapter 5
... Electrical signals can take many forms and can be analogue or digital A simple analogue form is where a voltage is proportional to the amplitude of a quantity being represented A simple digital form is where the voltage takes one of two values to represent the two states of a quantity Modula ...
... Electrical signals can take many forms and can be analogue or digital A simple analogue form is where a voltage is proportional to the amplitude of a quantity being represented A simple digital form is where the voltage takes one of two values to represent the two states of a quantity Modula ...
Reverse Doppler effect in backward spin waves scattered on surface
... frequency and below by the antenna excitation efficiency. It has a maximum just below the point of ferromagnetic resonance ( fFMR = 6577 MHz). Figure 3b shows the reflection characteristics for Port 1 (S11 parameter) due to spin waves generated at Port 1 being reflected back to the same antenna. The ...
... frequency and below by the antenna excitation efficiency. It has a maximum just below the point of ferromagnetic resonance ( fFMR = 6577 MHz). Figure 3b shows the reflection characteristics for Port 1 (S11 parameter) due to spin waves generated at Port 1 being reflected back to the same antenna. The ...
Chapter - 02 - 7th Semester Notes
... • Another General rule for linear systems: if the input to a system T is 0, and if the output is not zero, then either the system is non linear, or it is linear but non relaxed. • Hence, T is relaxed, superposition is satisfied T is relaxed, superposition or I/P O/P not satisfied T non relaxed, supe ...
... • Another General rule for linear systems: if the input to a system T is 0, and if the output is not zero, then either the system is non linear, or it is linear but non relaxed. • Hence, T is relaxed, superposition is satisfied T is relaxed, superposition or I/P O/P not satisfied T non relaxed, supe ...
Data Sheet
... • Fail Safe operation due to supervision of function, both in antenna box and relay box. ...
... • Fail Safe operation due to supervision of function, both in antenna box and relay box. ...
Appendix B: Decibel Arithmetic
... Perhaps the most important of them all is that utilizing dBs drastically reduces the dynamic range that a designer or a user has to use. For example, an incoming radar signal may be as weak as 0.000000001V , which can be expressed in dBs as 10 log ( 0.000000001 ) = – 90dB . Alternatively, a target m ...
... Perhaps the most important of them all is that utilizing dBs drastically reduces the dynamic range that a designer or a user has to use. For example, an incoming radar signal may be as weak as 0.000000001V , which can be expressed in dBs as 10 log ( 0.000000001 ) = – 90dB . Alternatively, a target m ...
Trig-Tek™ Product Information
... The Trig-Tek™ 45EMD Portable Calibrator is a convenient signal generator and is especially useful for field testing of monitoring systems. It has the required outputs to simulate a variety of pickups, temperature pressure, vibration (acceleration, velocity or displacement), or it can be used in a la ...
... The Trig-Tek™ 45EMD Portable Calibrator is a convenient signal generator and is especially useful for field testing of monitoring systems. It has the required outputs to simulate a variety of pickups, temperature pressure, vibration (acceleration, velocity or displacement), or it can be used in a la ...
LOW-ANGLE BEAM RIDING OVER THE OCEAN
... total signal and performs the essential operations of automatic gain control (AGe), carrier envelope detection, and phase comparison of the detected signal with the scan reference signal to yield the steering intelligence signal E. If sea reflection were not present, the error angle ED would be trul ...
... total signal and performs the essential operations of automatic gain control (AGe), carrier envelope detection, and phase comparison of the detected signal with the scan reference signal to yield the steering intelligence signal E. If sea reflection were not present, the error angle ED would be trul ...
Digital Representation of Audio Information
... Desired Skills: Capability to develop software in a real-time environment. A strong understanding of radar and SAR processing techniques. Ability to interact and present technical information verbally and in writing (briefings, presentations, training, etc) to internal and external customers. A PhD ...
... Desired Skills: Capability to develop software in a real-time environment. A strong understanding of radar and SAR processing techniques. Ability to interact and present technical information verbally and in writing (briefings, presentations, training, etc) to internal and external customers. A PhD ...
Coupling Capacitors (Updated 5-15
... From Figure 1 again, we see we need to assure this degradation occurs within a half-cycle of frequency f, so we have RC * 0.1 = 1/(2*f) which can be solved: C = 5 / (f *R). Thus for a given frequency f (and R = 50) we can calculate the required minimum capacitance needed to assure at most a 10% degr ...
... From Figure 1 again, we see we need to assure this degradation occurs within a half-cycle of frequency f, so we have RC * 0.1 = 1/(2*f) which can be solved: C = 5 / (f *R). Thus for a given frequency f (and R = 50) we can calculate the required minimum capacitance needed to assure at most a 10% degr ...
Over-the-horizon radar
Over-the-horizon radar, or OTH (sometimes called beyond the horizon, or BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar. Several OTH radar systems were deployed starting in the 1950s and 1960s as part of early warning radar systems, but these have generally been replaced by airborne early warning systems instead. OTH radars have recently been making a comeback, as the need for accurate long-range tracking becomes less important with the ending of the Cold War, and less-expensive ground based radars are once again being considered for roles such as maritime reconnaissance and drug enforcement.