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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8164511 | Signal processing device, radar device, vehicle control device, and signal processing method In order to prevent delays in output of detection results, even when a plurality of frequency modulation methods with different frequency change rates are used, an FM-CW radar device employing frequency modulation with two different frequency change rates, has dista... | 04/24/2012 |
| 7791528 | Method and apparatus for radar signal processing A radar apparatus and method for determining the range to and velocity of at least one object comprising, transmitting a plurality of RF signals, each comprising a particular frequency and being transmitted during a particular unique finite period, the plurality of ... | 09/07/2010 |
| 7768445 | Frequency-modulated radar system with variable pulse interval capability A radar system utilizing a CW radar system, including an FMCW radar, is capable of avoiding interference wave generation and of simultaneously covering a number of radar systems within limited frequency modulation bands. The radar system 1 for emitting into s... | 08/03/2010 |
| 7365674 | Airborne weather profiler network Apparatus and methods for remotely sensing meteorological conditions and for building models from the sensed conditions. More particularly, networks and systems are provided for gathering remotely sensed profiles of the meteorological conditions and for building the... | 04/29/2008 |
| 7327307 | Radar system with adaptive waveform processing and methods for adaptively controlling the shape of a radar ambiguity function An adaptive waveform radar system transmits a selected waveform of a family of related waveforms and either phase shifts or bit shifts the radar return signal for correlating with the other waveforms of the family. In some embodiments, phase shifting may be performe... | 02/05/2008 |
| 7319428 | Positioning of mobile wireless terminal A wireless apparatus for determining a phase difference of a received RF signal, and method. The apparatus includes antennas displaced from each other by a predetermined distance for receiving an RF signal. The apparatus also includes an exclusive OR (EXOR) circuit ... | 01/15/2008 |
| 7218224 | Human body detection sensor A human body detection sensor includes two oscillation circuits, a tuning circuit which connects equivalent points of the two oscillation circuits to each other, an antenna electrode which is connected to any one of the oscillation circuits so that a change in circu... | 05/15/2007 |
| 7205931 | Method for determining the distance between a base station and a mobile object, in addition to a base station and identification system for a method of this type A method for determining the distance between a base station (SLG) and a mobile object (DT1–DT3). A HF carrier frequency and an offset frequency (df) are predetermined for a QAM modulation. The HF carrier frequency is increased and decreased by the o... | 04/17/2007 |
| 7183968 | FM-CW radar system In an FM-CW radar system, a frequency modulating said modulating wave output from said modulating signal generator has a frequency variation skew with respect to a time axis (modulation skew), and the radar system includes a means for varying the modulation skew by ... | 02/27/2007 |
| 7151476 | Radar system having a beamless emission signature A radar system having a beamless emission signature is described. In one implementation, the radar system includes a transmission system and a receiver system. The transmission system is configured to transmit a pattern comprising a plurality of radar signals having... | 12/19/2006 |
| 7136013 | Radio-wave radar system and adaptive cruise control system In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following travel, even in a condition in which the relative speed is 0. By combining... | 11/14/2006 |
| 7071868 | Radar detection method and apparatus A radar system and method use a radar FMCW chirp having variable chirp characteristics. ... | 07/04/2006 |
| 7023377 | Noise modulated remote distance measurement The invention relates to remote distance measurement by means of a transmitted noise modulated probing signal (E), whereby at least one of a distance (Y(t)) and a velocity (V(t)) in relation to a signal transceiver (200) is determined. The probing of signal (... | 04/04/2006 |
| 6972710 | Automotive radio wave radar and signal processing In an automotive radio wave radar, a center frequency of a transmitted wave is shifted at a certain cycle, and position information of an obstacle detected at three or more center frequencies is subjected to decision by majority to determine whether detection result... | 12/06/2005 |
| 6933878 | Wide bandwidth radar A wave-form generator drives a number of microwave generating devices each operating at different frequency bands. The output of each microwave generator is connected to its own transmission channel of limited bandwidth which contains all the non-linear components n... | 08/23/2005 |
| 6918875 | Ultrasound measurement apparatus An ultrasound wave is transmitted from a probe (120) to a moving reflector (130) and the reflected ultrasound wave is received back by the same probe (120). With n-divided wave bands of the to-be-used spectrum, the ultrasound wave to be transmit... | 07/19/2005 |
| 6828929 | Technique for non-coherent integration of targets with ambiguous velocities A method for processing pulsed-Doppler radar signals to detect a target includes transmitting radar signals from a radar system according to a predetermined frequency technique including signals having frequency diversity, receiving signals within a frequency band, ... | 12/07/2004 |
| 6703967 | Distance measuring device From a transmitter (18) and a transmission antenna (10), a first frequency signal having a fixed frequency is transmitted for a predetermined time or more, a second frequency signal having a certain frequency difference from the first frequency signal is ... | 03/09/2004 |
| 6674393 | FM-CW radar processing device An FM-CW radar processing system pairs up peaks obtained by fast-Fourier transforming a beat signal occurring on an up portion and a down portion of a triangular-shaped FM-CW wave, calculates a distance or relative velocity with respect to a target object... | 01/06/2004 |
| 6657582 | Radar apparatus capable of measuring a plurality of objects that are in close proximity As to a beat signal of a received wave, for instance, a plurality of FFT-based frequency spectra of every FM rise zone are accumulated in an accumulation unit. A judgment unit judges a valley section from the plurality of frequency spectra accumulated. A ... | 12/02/2003 |
| 6606052 | Method and apparatus for detecting multiple objects with frequency modulated continuous wave radar A method and an apparatus for multiple object detection by automotive FMCW radars provides distance and relative velocity information. A two chirp frequency sweep with small slope difference is utilized and, since the difference is small, the distance inf... | 08/12/2003 |
| 6434506 | Process for determining the relative velocity between two moving objects The invention relates to a process for determining the relative velocity in the radial direction between two moving objects, using linear frequency modulation with continuous frequency sweeps. A problem in such processes lies in being clearly able. to det... | 08/13/2002 |
| 6184817 | Master frequency generator A system is provided for generating multiple frequencies in a specified frequency band, with a specified step size between frequencies, in which the spectral purity of the frequencies is assured. The switching speed between frequencies is very fast, limit... | 02/06/2001 |
| 6127965 | Method and apparatus for rejecting rain clutter in a radar system A method and apparatus for detecting the presence of objects in a vehicle operator's blind spots. The apparatus comprises a side-facing Doppler radar system using continuous wave (CW) transmission with frequency modulation (FM) operation from a frequency ... | 10/03/2000 |
| 6023238 | Method and device for the removal of ambiguity in distance, applied especially to frequency-shift keying continuous-wave radars Disclosed are a method and a device for the removal of ambiguity in distance. The method computes the distance of the targets detected by the radar using several estimation functions (21, 22, 23). When the estimation functions give substantially the same ... | 02/08/2000 |
| 5963163 | Method and device for frequency-modulated continuous-wave radar detection with removal of ambiguity between distance and speed In a method and device for frequency-modulated continuous-wave radar detection with removal of ambiguity between the distance and the speed, the radar sends out at least alternately two parallel and discontinuous frequency modulation ramps that are slight... | 10/05/1999 |
| 5955985 | Device for the reduction of noise in a radar receiver Disclosed is a device for the reduction of noise in a radar receiver. The noise to be reduced being governed by a 1/Fk relationship and the radar carrying out an encoding of the transmission in at least two frequencies, the device comprises at ... | 09/21/1999 |
| 5945939 | Multibeam FM radar system A multibeam FM radar system has an FM radar module for transmitting beams of FM signals whose frequencies linearly vary in rising and falling periods, in respective different directions with adjacent ones of the beams overlapping each other, receiving ech... | 08/31/1999 |
| 5905458 | FM radar apparatus An FM radar apparatus detects a distance to and/or a speed of a target not only from peak frequencies of beat signals in respective frequency rise and fall regions but also by reusing the peak frequency in the preceding frequency rise or fall region. As a... | 05/18/1999 |
| 5751241 | Method and apparatus for measuring the speed of a moving body To measure the speed of a body (1) moving relative to the ground (2) by means of a broad-band Doppler radar (3) fixed to the moving body, two incident radar waves are transmitted successively towards the ground at instants that are close together, and the... | 05/12/1998 |
| 5677695 | Radar apparatus for detecting a distance/velocity A radar apparatus for detecting a distance/velocity has a transmitting system for transmitting a signal which is frequency-modulated with a modulating signal having a predetermined recurrence frequency, a receiving system for receiving a reflected wave si... | 10/14/1997 |
| 5646623 | Coherent, frequency multiplexed radar Coherent, frequency multiplexed radar is a new generic type of continuous wave radar architecture wherein contiguous pulses of discrete frequency segmented signals are serially transmitted from an antenna, and after reflection from radar targets, signals ... | 07/08/1997 |
| 5606324 | Radar system A radar system having a transmitter for transmitting a series of radio frequency (RF) pulses with sequential, incrementally changing carrier frequencies. A receiver receives energy from multiple scattering points of an object reflecting such transmitted R... | 02/25/1997 |
| 5481268 | Doppler radar system for automotive vehicles A continuous wave Doppler radar system having a transmitter module and a receiver module is provided for automotive vehicles. Each module includes an antenna system, including a horn, a lens, and a waveguide system, which is attached to a monolithic micro... | 01/02/1996 |
| 5381153 | Portable FM-CW radar device with frequency conversion by first and second frequencies A FM-CW radar device is provided for frequency-modulating a high frequency signal with a modulation signal, transmitting the modulated high frequency signal, receiving a signal reflected by a target object and frequency-modulating the reflection signal wi... | 01/10/1995 |
| 5285207 | Multi-frequency automatic radar system A Doppler control circuit for a CW or pulse Doppler radar system for monitoring not only the phase shift between echo signals from several targets but also the amplitude difference between several targets and to further tune the radar to a particular targ... | 02/08/1994 |
| 5276453 | Method for ambiguity resolution in range-Doppler measurements A method for resolving range and doppler target ambiguities when the target has substantial range or has a high relative velocity in which a first signal is generated and a second signal is also generated which is coherent with the first signal but at a s... | 01/04/1994 |
| 5222100 | Range based acquisition system A novel range based acquisition system includes a receiver for receiving PN encoded signals coupled to a novel range based variable dwell correlator which detects and acquires uniquely timed received transmitter PN encoded signals employing different sear... | 06/22/1993 |
| 5136298 | Microwave range detector system A microwave range detector system for determining the range of a moving object in a monitored area includes: a microwave antenna for focusing microwave energy in the area to be monitored; means for selectively generating microwave signals at a first micro... | 08/04/1992 |
| 5079556 | Coherent pulse radar system A coherent pulse radar system capable of eliminating a signal associated with a multiple time around path or capable of removing range ambiguity of this multiple time around signal. The radar system includes a device for changing phases of transmitted pul... | 01/07/1992 |
