Abstract: A radar system, a radar device, and an interference avoidance method are obtained that can utilize frequency effectively even in three or more radar devices. A radar system includes three or more radar devices and a schedule management controller. Schedule management controller predicts an interference time period that is a time period during which the overlapping scanning/radiation range is generated, determines a first interference avoidance measure that is a measure to cause radar devices to use respective different use frequencies while keeping a restriction on the number of frequency channels, in the predicted interference time period, and determines a second interference avoidance measure to be performed by a radar device that is unable to avoid interference by the first interference avoidance measure.

Abstract: A secondary echo and a primary echo subjected to topographic echo processing are compared with each other. When there is a topographic echo in the primary echo or the secondary echo determined as a strong echo, an echo resulting from removal of the topographic echo is defined as a strong-topographic-echo-removed reception signal. Electric power of the topographic echo in the secondary echo or the primary echo determined as a weak echo and the strong-topographic-echo-removed reception signal are defined as weak echo parameters. Electric power of the weak echo estimated from a reception signal in a weak echo region resulting from phase correction of a reception signal resulting from removal of a frequency component of the strong echo from the strong-topographic-echo-removed reception signal representing the weak echo parameter, a spectral width of the weak echo representing the weak echo parameter, and a Doppler velocity of the weak echo are provided as spectral parameters.

Abstract: A signal processing apparatus that performs signal processing on a Doppler spectrum derived from a reception signal of a reflected wave of pulsed undulation repeatedly transmitted into a space removes a topographic echo spectrum from the Doppler spectrum and extracts a plurality of candidate points of a target echo spectrum from the Doppler spectrum from which the topographic echo spectrum has been removed. Furthermore, the signal processing apparatus determines positional relation between the candidate points and a plurality of removed points of the topographic echo spectrum removed from the Doppler spectrum and extracts as an interpolation point, a point where the target echo spectrum is missing by removal of the topographic echo spectrum based on positional relation between the candidate points and the removed points in a direction of a frequency axis.

Abstract: Based on a reception signal of a reflected wave of pulsed undulation repeatedly transmitted into a space, a Doppler spectrum derived from the reception signal, and a topographic-echo-removed spectrum resulting from removal of a topographic echo from the Doppler spectrum, a first weather echo region is found by using a weather parameter among weather parameters that is different in behavior between a weather echo and the topographic echo, and a second weather echo region is found by using a weather parameter among the weather parameters a behavior of which is not dependent on a Doppler velocity. The weather echo region is determined based on the first weather echo region and the second weather echo region. A signal processing apparatus and a signal processing method with which a zero-Doppler weather echo attenuated, that is, erroneously suppressed, by topographic echo removal processing is readily reconstructed are thus obtained.

Abstract: An optical filter (10) comprises a matrix (12) and fine particles (14) dispersed in the matrix (12), wherein the fine particles (14) have a parameter Ds of 8.0 to 30 inclusive, Ds being determined by a USAXS pattern and given by Ds=?/(B·cos ?·Ra), where ? is the X-ray wavelength, ? is one half the scattering angle 2?(rad) providing a scattering intensity peak, B is the half width (FWHM, rad) of the peak, and Ra is the average particle size of the fine particles (14).

Abstract: Provided is a thermosetting resin composition that has high reactivity, can be adapted to various curing conditions, and has extremely high versatility. The thermosetting resin composition contains a resin component (A) containing —COOR (R is an alkyl group having 50 or less carbon atoms) and a hydroxy group, and a transesterification catalyst (B). A curing start temperature is 130° C. or lower, and a gel fraction when cured under a condition of baking at 150° C. for 30 minutes is 80% or more.

Abstract: Provided is a thermosetting resin composition, from which a cured product having excellent transparency with less yellowing than that in the related art can be obtained, and which is advantageous in cost because a monomer obtained by using an inexpensive raw material is used. An ester compound contains, in one molecule, at least one functional group represented by the following general formula (1) or (2). (In both the general formulae (1) and (2), R1 is an alkyl group having 50 or less carbon atoms. R2 is an alkylene group having 50 or less carbon atoms that may contain an oxygen atom and a nitrogen atom as a portion thereof.

Abstract: [Problem] To obtain a thermosetting resin composition that has curing performance at a lower temperature and uses transesterification capable of also suitably coping with conversion into an aqueous form as a curing reaction. [Solution] A thermosetting resin composition containing a resin component (A), which includes a structure (a) represented by the following general formula (1) and a hydroxy group (b), and a transesterification catalyst (B). n=0 to 20 R1 is an alkyl group having 50 or less carbon atoms. R3 is hydrogen or an alkyl group having 10 or less carbon atoms.

Abstract: To provide a resin composition, which has both a thermosetting property and active energy curability, satisfactory performances, and excellent performances including handleability of being inexpensive without having a concern about a short pot life after blending with a thermal cross-linking agent as in the related art. The curable resin composition contains: a resin component (A) containing a (meth)acryloyl group (a), a hydroxy group (b), and an alkyl ester group (c); and an initiator (B).

Abstract: A secondary echo and a primary echo subjected to topographic echo processing are compared with each other. When there is a topographic echo in the primary echo or the secondary echo determined as a strong echo, an echo resulting from removal of the topographic echo is defined as a strong-topographic-echo-removed reception signal. Electric power of the topographic echo in the secondary echo or the primary echo determined as a weak echo and the strong-topographic-echo-removed reception signal are defined as weak echo parameters. Electric power of the weak echo estimated from a reception signal in a weak echo region resulting from phase correction of a reception signal resulting from removal of a frequency component of the strong echo from the strong-topographic-echo-removed reception signal representing the weak echo parameter, a spectral width of the weak echo representing the weak echo parameter, and a Doppler velocity of the weak echo are provided as spectral parameters.

Abstract: Based on a reception signal of a reflected wave of pulsed undulation repeatedly transmitted into a space, a Doppler spectrum derived from the reception signal, and a topographic-echo-removed spectrum resulting from removal of a topographic echo from the Doppler spectrum, a first weather echo region is found by using a weather parameter among weather parameters that is different in behavior between a weather echo and the topographic echo, and a second weather echo region is found by using a weather parameter among the weather parameters a behavior of which is not dependent on a Doppler velocity. The weather echo region is determined based on the first weather echo region and the second weather echo region. A signal processing apparatus and a signal processing method with which a zero-Doppler weather echo attenuated, that is, erroneously suppressed, by topographic echo removal processing is readily reconstructed are thus obtained.

Abstract: A signal processing apparatus that performs signal processing on a Doppler spectrum derived from a reception signal of a reflected wave of pulsed undulation repeatedly transmitted into a space removes a topographic echo spectrum from the Doppler spectrum and extracts a plurality of candidate points of a target echo spectrum from the Doppler spectrum from which the topographic echo spectrum has been removed. Furthermore, the signal processing apparatus determines positional relation between the candidate points and a plurality of removed points of the topographic echo spectrum removed from the Doppler spectrum and extracts as an interpolation point, a point where the target echo spectrum is missing by removal of the topographic echo spectrum based on positional relation between the candidate points and the removed points in a direction of a frequency axis.

Abstract: Provided is a method for producing a sintered body that forms a rare-earth permanent magnet, has a single sintered structure and an arbitrary shape, and has easy magnetization axis orientations of different directions applied to the magnet material particles in a plurality of arbitrary regions. This method forms a three-dimensional first molded article from a composite material formed by mixing a resin material and magnet material particles containing a rare-earth substance. The first molded article is then subjected to a deforming force and a second molded article is formed in which the orientation direction of the easy magnetization axis of the magnet material particles in at least the one section of the horizontal cross-section is changed to a direction which differs from the orientation direction of the first molded article. The second molded article is heated to a sintering temperature and kept at the temperature for a period of time.

Abstract: A linear-depolarization ratio calculator (12) is configured so as to determine a radar reflectivity factor Zhh in transmission of a horizontally polarized wave and reception of a horizontally polarized wave, the radar reflectivity factor being a reflected wave intensity after integration of a reflected wave intensity Vhh(n) calculated by a reflected-wave intensity calculator (11), and a radar reflectivity factor Zvh in transmission of a horizontally polarized wave and reception of a vertically polarized wave, the radar reflectivity factor being a reflected wave intensity after integration of a reflected wave intensity Vvh(n+2) and calculate a linear depolarization ratio LDRvh which is the ratio between the radar reflectivity factor Zhh and the radar reflectivity factor Zvh. As a result, even when three types of polarized-wave transmission/reception processing elements are repeatedly performed, the linear depolarization ratio LDRvh can be calculated.

Abstract: In a weather radar apparatus, an array antenna includes antenna elements arranged in a horizontal direction and an elevation angle direction. An antenna driver rotates the array antenna in an azimuth direction. A transmitter controls the antenna elements to radiate the transmission waves with controlled amplitudes and phases respectively. A reception beam former processes reception signals to form a plurality of reception beams in the azimuth direction. A reception beam allocator receives an azimuth at which the array antenna is oriented, and allocates the reception beams to respective azimuth ranges. A weather observer obtains information about a result of weather observation for each of the azimuth ranges, from the reception beams allocated to the respective azimuth ranges by the reception beam allocator.

Abstract: There is provided a transparent conductive film achieving low resistance characteristics of a transparent conductive layer. The present invention provides a transparent conductive film including: a polymer film substrate; and a transparent conductive layer formed on at least one surface of the polymer film substrate by means of a sputtering method using a sputtering gas including argon, wherein an existing atomic amount of argon atoms in the transparent conductive layer is 0.24 atomic % or less; an existing atomic amount of hydrogen atoms in the transparent conductive layer is 13×1020 atoms/cm3 or less; and the transparent conductive layer has a specific resistance of 1.1×10?4 ?·cm or more and 2.8×10?4 ?·cm or less.

Abstract: In a wind profiler, the number of acquisition ranges is expanded up to heights where noise is introduced into a received signal, even in the case where noise due to transmit/receive switching is introduced. A signal processing device in a wind profiler emits an electromagnetic wave pulse into a space, switches from transmitting to receiving, receives an electromagnetic wave reflected from a target to be observed, and measures wind speed from a Doppler frequency of the received electromagnetic wave, and includes an unnecessary data determiner that detects a noise section in which switching noise occurs due to the switching between transmitting and receiving, and an unnecessary data eraser that converts a received signal in the noise section to substantially insignificant data.

Abstract: A linear-depolarization ratio calculator (12) is configured so as to determine a radar reflectivity factor Zhh in transmission of a horizontally polarized wave and reception of a horizontally polarized wave, the radar reflectivity factor being a reflected wave intensity after integration of a reflected wave intensity Vhh(n) calculated by a reflected-wave intensity calculator (11), and a radar reflectivity factor Zvh in transmission of a horizontally polarized wave and reception of a vertically polarized wave, the radar reflectivity factor being a reflected wave intensity after integration of a reflected wave intensity Vvh(n+2) and calculate a linear depolarization ratio LDRvh which is the ratio between the radar reflectivity factor Zhh and the radar reflectivity factor Zvh. As a result, even when three types of polarized-wave transmission/reception processing elements are repeatedly performed, the linear depolarization ratio LDRvh can be calculated.

Abstract: Provided is a method for producing a sintered body that forms a rare-earth permanent magnet, has a single sintered structure and an arbitrary shape, and has easy magnetization axis orientations of different directions applied to the magnet material particles in a plurality of arbitrary regions. This method forms a three-dimensional first molded article from a composite material formed by mixing a resin material and magnet material particles containing a rare-earth substance. The first molded article is then subjected to a deforming force and a second molded article is formed in which the orientation direction of the easy magnetization axis of the magnet material particles in at least the one section of the horizontal cross-section is changed to a direction which differs from the orientation direction of the first molded article. The second molded article is heated to a sintering temperature and kept at the temperature for a period of time.

Abstract: There is provided a transparent conductive film achieving low resistance characteristics of a transparent conductive layer. The present invention provides a transparent conductive film including: a polymer film substrate; and a transparent conductive layer formed on at least one surface of the polymer film substrate, wherein the transparent conductive film includes an inorganic undercoat layer formed by means of a vacuum film-forming method between the polymer film substrate and the transparent conductive layer, and an existing atomic amount of carbon atoms in the transparent conductive layer is 3×1020 atoms/cm3 or less.