Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2. Отображено 2.
11-04-2023 дата публикации

Snapshot iteration array covariance matrix estimation method

Номер: CN115952390A
Автор: ZENG HAO, GUO CHENGLIN, DUAN RUI, CHEN LIGANG, CAI WEIJIE, JIAO JINGTAO
Принадлежит:

A snapshot iteration array covariance matrix estimation method comprises the following steps: (1) aiming at a uniform linear array, establishing a phased array uniform linear array model, and setting an array receiving signal snapshot vector as x (k); (2) taking m = 1, and estimating an initial first covariance matrix R (m) by using the beginning K snapshots; (3) when a new snapshot x (m + K) is received, Ra and Rb are respectively calculated by using a formula; (4) calculating a new covariance estimation matrix R (m + 1) = R (m) + Ra-Rb; and (5) enabling m to be equal to m + 1, returning to the step (3), and realizing the iterative calculation method of the covariance estimation matrix. According to the method, the covariance matrix is estimated by adopting an iteration method, the calculation is simple, and the real-time performance is high. The method can be applied to the fields of communication, radar, measurement and control and the like which have requirements for array covariance ...

Подробнее
Номер записи: 1
29-06-2005 дата публикации

Autoclaved aerated concrete block made of gold tailings and its production process

Номер: CN0001631836A
Автор: YANG WENHAO, LIU WENBO, JIAO JINGTAO, WENHAO YANG, WENBO LIU, JINGTAO JIAO
Принадлежит:

The invention relates to gold tail mine concrete block and its productive technique, which belongs to wall material for building and productive technical field. Its characteristics is that the main raw material for making concrete block includes slag, cement, burnt lime, aluminum powder and water, and their mess ratio is: slag 60~70%, cement-6~10%, burnt lime-20~30% aluminum powder -0.01~0.05% and the water content can be changed according to the requirement of gold tail slime density. The invention can reach the purposes of environmental protection, energy saving, using the waste, increasing the building's quality and assuring people's health, it can use waste slag completely, with good resistance to coldness and without radioactive harm, can be compound with mortar so that solve the problem of wall surface falling down.

Подробнее
Номер записи: 2