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8358235 Wireless sensor device  
A wireless sensor device includes a transmission signal generation unit that generates a frequency-spread high frequency transmission signal such that a transmission frequency is continuously...
8275493 Bow riding unmanned water-borne vehicle  
A system and method are provided for launching and recovering an unmanned, water-born vehicle (UWBV) from a mother ship. The UWBV mimics the behavior of dolphins and is positioned ahead of the...
RE40128 Stabilization in a radar level gauge  
A radar gauge adapted to sense fluid level in a tank and including a radar gauge circuit in which radar transmission and level sampling are controlled by a transmit frequency and a sample...
6385266 Sampling PLL for high resolution radar systems  
A low-noise sampling PLL for high-resolution radar systems wherein the reference frequencies are taken from a line spectrum (SPK), which has been generated from the mixture of a low quartz...
6097331 FM-CW radar system for measuring distance to and relative speed of target  
An FM-CW radar apparatus is provided which may be employed in automotive anti-collision or radar cruise control systems. The radar apparatus transmits as a radar wave a high-frequency signal which...
5717399 Radar device for vehicle use  
A radar device for vehicle use which can be manufactured inexpensively while enhancing its monitoring function for an adjacent object as well as a remote object. The radar device includes a radar...
5619208 FM-CW radar system  
In an FM-CW radar system, a beat signal is frequency-analyzed for selecting ascending-side beat frequencies and descending-side beat frequencies for a plurality of targets. By pairing the...
5016016 Volume-scattered echo discrimination device for FM/CW range measuring radar and use in a radio altimeter  
The device comprises, in a control loop of the subtractive beat frequency fb between transmitted waves and waves received as an echo, a pursuit discriminator (11) establishing the frequency fb at...
4812035 AM-FM laser radar  
A laser radar system wherein a beam of continuous wave (CW) electromagnetic energy is generated with frequency modulation (FM) and amplitude modulation (AM) being imposed thereon to produce an...
4665401 Millimeter wave length guidance system  
A high frequency target seeking device, using a stabilized reflector antenna, performs range search and tracking functions and target angle search and tracking functions. A technique is provided...
4599618 Nearest return tracking in an FMCW system  
An FMCW distance measuring device is disclosed which provides nearest return tracking for increased accuracy. A portion of the transmitted wave in an FMCW altimeter is mixed with a received signal...
4568938 Radar altimeter nearest return tracking  
An FMCW distance measuring device is disclosed which enables increased accuracy by detecting the nearest return. A portion of the transmitted wave in an FMCW altimeter is mixed with the received...
4509049 FMCW system for providing search-while-track functions and altitude rate determination  
An FMCW distance measuring system is disclosed which provides a search and track function for enabling searching for nearer returns during altitude tracking, and for more accurately determining...
4503433 Range measurement by means of frequency modulated continuous wave radar  
A continuous wave FM range measuring apparatus for transmitting a signal F which is linearly modulated by a sawtooth signal over a frequency excursion ΔF during a duration T and which has a...
4464662 Determining azimuth of a transponder by measuring a plurality of phase shifts  
A method for determining the azimuth α of a transponder relative to a radar system which transmits a frequency F varying linearly with time. The system comprises two receiving antennas disposed at...
4367473 Distance measuring equipment utilizing frequency modulation  
A radio distance measuring equipment emits a frequency modulated carrier wave signal, having a periodic frequency deviation ΔF and a mean frequency Fo, toward an object, and receives a portion of...
4302758 Radar system for determining range and speed of an object  
A system for determining the range H to an object and the relative velocity v of the object, including means for generating first and second high-frequency signals, transmitting, receiving and...
4276549 FM-CW Radar distance measuring apparatus  
A FM-CW radar distance measuring apparatus, comprising a feedback loop having a high-frequency signal generator, a mixer device producing a beat signal between the transmitted wave and the...
4205314 Device for measuring the range of a moving target and the speed at which it approaches or recedes  
A radio range measuring apparatus having a controlled modulation slope in order to keep the beat frequency between the transmitted signal and the received signal constant. The apparatus also...
4107679 Frequency modulator for high-precision range measurements  
A range measuring apparatus of the linear frequency modulation type is disclosed which comprises a measuring control loop for rendering the beat frequency between the transmitted and received...
3921169 Multiple mode radiometric system with range detection capability  
An improved microwave radiometric system features operation selectively in passive or active modes, providing in the active mode incoherent frequency modulated continuous wave illumination of a...
3588899 MEASURING DEVICE FOR EXAMPLE,FREQUENCY-MODULATION RADIO ALTIMETER  
1,212,046. Radar. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 10 Sept.; 1968 [11 Sept., 1967], No. 43009/68. Heading H4D. Relates to the kind of F.M.C.W. radar altimeter in which a triangular...
3229286 Fm cw distance measuring system  
3109172 Low altitude f. m. altimeter  
3065465 Distance measuring devices  
2929057 Frequency modulation altimeter  
2928085 Radio altimeter systems  
2717378 Distance measuring devices  
2714206 Signal reliability indicators  
2537593 Frequency modulation altimeter and range finder  
Matches 1 - 30 out of 30