摘要:
A method for identifying transmitters by a terminal in a single-frequency network comprising a plurality of transmitters. The transmitters are synchronized and transmit with an artificial delay τi, specific to each transmitter. The method comprises at least one step of acquiring the approximate position of the terminal {circumflex over (p)}, the position pi of a list of transmitters {Tx} in the vicinity of the terminal and the delays τi associated with them, a step of measuring pseudo-distances ρi between the transmitters and the terminal and a step of associating the measurements ρi with the transmitters of known positions pi by minimizing a cost function, said cost function ν(ρi,{circumflex over (p)},σ) corresponding to the norm of the error between the measurements ρi and a model of measurements of the pseudo-distances applied to a permutation of the position of the transmitters σ.
摘要翻译:一种用于由包括多个发射机的单频网络中的终端识别发射机的方法。 发射机同步并以每个发射机特有的人为延迟τi传输。 该方法包括至少一个步骤:获取终端的近似位置(回旋(p)}),终端附近的发射机列表{Tx}的位置pi和与其相关联的延迟τi,步骤 测量发射机和终端之间的伪距离和i的步骤以及通过最小化成本函数将测量值与已知位置pi的发射机相关联的步骤,所述成本函数&ngr;(&rgr; i,{circumflex over (p)},&sgr;),其对应于测量值与测量值之间的误差范围,以及应用于发射器和位置的位置的置换的伪距离的测量模型。
摘要:
The invention relates to a Cr2O3-forming alloy that is resistant to oxidization and/or corrosion at high temperature, especially by glass, characterized in that it contains, in dispersion within its matrix, chromium oxide Cr2O3, or a precursor of this oxide. This alloy can be prepared by powder metallurgy using a process of hot consolidation of metallic powders, in particular by sintering. The alloy is especially suitable for articles which are to be used in a high-temperature oxidizing or corrosive environment.
摘要翻译:本发明涉及一种耐高温氧化和/或腐蚀,特别是玻璃的Cr2O3形成合金,其特征在于,在其基体内分散有氧化铬Cr 2 O 3或该氧化物的前体。 该合金可以通过使用金属粉末的热固化方法的粉末冶金制备,特别是通过烧结来制备。 该合金特别适用于在高温氧化或腐蚀性环境中使用的制品。
摘要:
The invention relates to abrasive grinding wheels with an organic binder, comprising a reinforcement in the form of metal fibers. Preferably, those fibers are in the form of "vitreous" metallic ribbons. The grinding wheels according to the invention are advantageously more durable and more conductive.