SELECT data_key, data_value
FROM xf_data_registry
WHERE data_key IN ('options', 'languages', 'contentTypes', 'codeEventListeners', 'deferredRun', 'simpleCache', 'addOns', 'defaultStyleProperties', 'routeFiltersIn', 'routeFiltersOut', 'routesPublic', 'nodeTypes', 'bannedIps', 'discouragedIps', 'styles', 'displayStyles', 'userBanners', 'smilies', 'bbCode', 'threadPrefixes', 'userTitleLadder', 'reportCounts', 'moderationCounts', 'userModerationCounts', 'notices', 'userFieldsInfo')Run Time: 0.001547
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | xf_data_registry | range | PRIMARY | PRIMARY | 27 | | 26 | Using where |
SELECT data_key, data_value
FROM xf_data_registry
WHERE data_key IN ('brListenerClasses', 'brBriviumAddOns')Run Time: 0.000289
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | xf_data_registry | range | PRIMARY | PRIMARY | 27 | | 2 | Using where |
SELECT *
FROM xf_brivium_addon
ORDER BY addon_id
Run Time: 0.000191
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | xf_brivium_addon | index | | PRIMARY | 77 | | 1 | |
INSERT INTO xf_data_registry
(data_key, data_value)
VALUES
(?, ?)
ON DUPLICATE KEY UPDATE
data_value = VALUES(data_value)
Params: brBriviumAddOns, a:0:{}
Run Time: 0.000167
SELECT cache_value
FROM xf_permission_combination
WHERE permission_combination_id = ?
Params: 1
Run Time: 0.000238
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | xf_permission_combination | const | PRIMARY | PRIMARY | 4 | const | 1 | |
SELECT thread.*
,
user.gender, user.avatar_date, user.gravatar,
NULL AS thread_read_date,
0 AS thread_reply_banned,
0 AS thread_is_watched,
'' AS draft_message, NULL AS draft_extra
FROM xf_thread AS thread
LEFT JOIN xf_user AS user ON
(user.user_id = thread.user_id)
WHERE thread.thread_id = ?
Params: 576340
Run Time: 0.000543
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | thread | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| SIMPLE | user | const | PRIMARY | PRIMARY | 4 | const | 1 | |
SELECT node.*, forum.*
,
permission.cache_value AS node_permission_cache,
NULL AS forum_read_date
FROM xf_forum AS forum
INNER JOIN xf_node AS node ON (node.node_id = forum.node_id)
LEFT JOIN xf_permission_cache_content AS permission
ON (permission.permission_combination_id = 1
AND permission.content_type = 'node'
AND permission.content_id = forum.node_id)
WHERE node.node_id = ?
Params: 25
Run Time: 0.000468
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | forum | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| SIMPLE | node | const | PRIMARY | PRIMARY | 4 | const | 1 | |
| SIMPLE | permission | const | PRIMARY | PRIMARY | 35 | const,const,const | 1 | |
SELECT post.*
,
thread.*, thread.user_id AS thread_user_id, thread.username AS thread_username,
thread.post_date AS thread_post_date,
post.user_id, post.username, post.post_date,
bb_code_parse_cache.parse_tree AS message_parsed, bb_code_parse_cache.cache_version AS message_cache_version,
user.*, IF(user.username IS NULL, post.username, user.username) AS username,
user_profile.*,
user_privacy.*,
signature_parse_cache.parse_tree AS signature_parsed, bb_code_parse_cache.cache_version AS signature_cache_version,
session_activity.view_date AS last_view_date,
0 AS like_date
FROM xf_post AS post
INNER JOIN xf_thread AS thread ON
(thread.thread_id = post.thread_id)
LEFT JOIN xf_bb_code_parse_cache AS bb_code_parse_cache ON
(bb_code_parse_cache.content_type = 'post' AND bb_code_parse_cache.content_id = post.post_id)
LEFT JOIN xf_user AS user ON
(user.user_id = post.user_id)
LEFT JOIN xf_user_profile AS user_profile ON
(user_profile.user_id = post.user_id)
LEFT JOIN xf_user_privacy AS user_privacy ON
(user_privacy.user_id = post.user_id)
LEFT JOIN xf_bb_code_parse_cache AS signature_parse_cache ON
(signature_parse_cache.content_type = 'signature' AND signature_parse_cache.content_id = post.user_id)
LEFT JOIN xf_session_activity AS session_activity ON
(post.user_id > 0 AND session_activity.user_id = post.user_id AND session_activity.unique_key = CAST(post.user_id AS BINARY))
WHERE (
(post.thread_id = ? AND (post.position >= 0 AND post.position < 10) )
)
AND (post.message_state IN ('visible'))
ORDER BY post.position ASC, post.post_date ASCParams: 576340
Run Time: 0.003757
| Select Type | Table | Type | Possible Keys | Key | Key Len | Ref | Rows | Extra |
|---|
| SIMPLE | thread | const | PRIMARY | PRIMARY | 4 | const | 1 | Using filesort |
| SIMPLE | post | ref | thread_id_post_date,thread_id_position | thread_id_post_date | 4 | const | 1 | Using index condition; Using where |
| SIMPLE | bb_code_parse_cache | eq_ref | content_type_id | content_type_id | 31 | const,xenforo.cc.post.post_id | 1 | Using where |
| SIMPLE | user | eq_ref | PRIMARY | PRIMARY | 4 | xenforo.cc.post.user_id | 1 | |
| SIMPLE | user_profile | eq_ref | PRIMARY | PRIMARY | 4 | xenforo.cc.post.user_id | 1 | |
| SIMPLE | user_privacy | eq_ref | PRIMARY | PRIMARY | 4 | xenforo.cc.post.user_id | 1 | |
| SIMPLE | signature_parse_cache | eq_ref | content_type_id | content_type_id | 31 | const,xenforo.cc.post.user_id | 1 | Using where |
| SIMPLE | session_activity | eq_ref | PRIMARY | PRIMARY | 22 | xenforo.cc.post.user_id,func | 1 | Using where |
INSERT INTO xf_thread_view
(thread_id)
VALUES
(?)
Params: 576340
Run Time: 0.000171
INSERT INTO `xf_session` (`session_id`, `session_data`, `expiry_date`) VALUES (?, ?, ?)
Params: 24625f02bed35fc1bd3c28f5311c5065, , 1638719183
Run Time: 0.000816
INSERT INTO xf_session_activity
(user_id, unique_key, ip, controller_name, controller_action, view_state, params, view_date, robot_key)
VALUES
(?, ?, ?, ?, ?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE
ip = VALUES(ip),
controller_name = VALUES(controller_name),
controller_action = VALUES(controller_action),
view_state = VALUES(view_state),
params = VALUES(params),
view_date = VALUES(view_date),
robot_key = VALUES(robot_key)
Params: 0, , , XenForo_ControllerPublic_Thread, Index, valid, thread_id=576340, 1638715583,
Run Time: 0.000143
INSERT INTO xf_bb_code_parse_cache
(content_type, content_id, parse_tree, cache_version, cache_date)
VALUES (?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE parse_tree = VALUES(parse_tree),
cache_version = VALUES(cache_version),
cache_date = VALUES(cache_date)
Params: post, 583299, a:3:{i:0;s:493:"9月27日消息，在2021中关村论坛的新技术新产品首发与推介大会上，商业卫星企业北京九天微星科技发展有限公司（简称“九天微星”）发布了新一代星载多波束相控阵天线。多波束相控阵是5G卫星通信系统的核心技术之一。随着5G技术及先进芯片工艺的发展，将有越来越多的卫星采用相控阵天线。值得注意的是，目前国内还没有搭载多波束相控阵天线的在轨高通量卫星。
";i:1;a:4:{s:3:"tag";s:3:"img";s:6:"option";N;s:8:"original";a:2:{i:0;s:5:"[IMG]";i:1;s:6:"[/IMG]";}s:8:"children";a:1:{i:0;s:90:"https://rdimg.com/proxy/https://static.cnbetacdn.com/article/2021/0927/d4d8fcc0ff3967b.jpg";}}i:2;s:1704:"
对5G卫星、雷达卫星乃至卫星终端等设备，多波束相控阵天线技术都至关重要。以5G卫星为例，其需要在高速移动过程中覆盖大面积区域，这就要求天线具备多波束同时工作及快速切换指向的能力。目前通信卫星常用的多波束天线主要有抛物面天线、波导缝隙阵天线等，控制实现比较复杂，且波束指向切换依靠伺服机构，难以实现快速切换。
多波束相控阵天线通过数字控制的方式，让天线系统可以同时接收或者发射来自不同方向的无线信号，比传统天线的波束切换速度显著提高，使用寿命更长，自重更轻。通过对多个方向上的用户同时进行服务，多波束数字相控阵能够让卫星的通信容量成倍增长。
在中国卫星互联网产业链上，多波束相控阵天线对于优化商业卫星及终端产品供应链、降低卫星互联网基建成本、引领天地一体互联网技术融合发展，具有战略意义。
九天微星成立于2015年，是国内的微小卫星全产业链服务商，为政企客户提供商业卫星定制、星座核心服务、行业终端应用和航天科教系统。公司致力于面向6G时代的技术研发和产品设计，推动地面网络与卫星网络融合发展。
2018年，九天微星两次发射共计8颗卫星，全部成功在轨运营，率先实现百公斤级卫星的设计研制和在轨验证。2019年起，公司代表民营企业参与国家卫星互联网新型基础设施建设。2021年，首个由国家发改委核准建设的民营卫星工厂完成一期工程建设，进入车间产线设备全面调试阶段。（静静）";}, 1621686945, 1638715583
Run Time: 0.001135