雖然AGPS技術的定位精度很高、首次捕獲GPS信號時間短,但是該技術也存在着一些缺點。 首先,室內定位的問題目前仍然無法圓滿解決。 另外,AGPS的定位實現必須通過多次網絡傳輸(最多可達六次單向傳輸),這對運營商來說是被認爲大量的佔用了空中資源。 AGPS最主要的問題是用戶對於使用移動定位業務必須更換手機難以接受。
星火 為全世界提供改正,而不是DGPS … 它還設計了新的處理演算法,以便獲得最佳的全球定位系統 … 普通GPS僅依靠接收衛星信號就可以了,是完全免費的。 而AGPS除了要接收衛星信號外,還要通過手機的GPRS網絡下載星曆資料,而GPRS上網是要額外花錢的。 在室外等空曠地區,其精度在正常的GPS工作環境下,可達10米左右,堪稱目前定位精度較高的一種定位技術。
a-gps: A-GPS技術
該技術的另一優點爲:首次捕獲GPS信號的時間一般僅需幾秒,不像GPS的首次捕獲時間可能要2~3分鐘。 a-gps 一般的使用者,無論是使用車用導航、專業登山GPS、手機GPS定位都是不需要額外付費的。 GPS僅是利用裝置單向接收GPS衛星訊號,類似使用收音機聽廣播,因此無需支付定位費用 … 在蜂窩移動通信系統中,AGPS系統通過手機定位伺服器作為輔助伺服器來協助GPS接收器完成測距和定位服務,輔助定位伺服器有比GPS接收器強大得多的 … a-gps2025 AGPS定位系統可獲得用戶的位置結果爲後臺應用服務。 AGPS定位服務器可將定位結果提供給後臺的SP/SI,SP/SI可在此基礎上開發多種多樣的與用戶位置相關的業務和應用。
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width=”601px” alt=”a-gps”/>
2021年12月30日 — GPS本身不收費,但一般地圖軟體在定位規劃路程時需要連線一下網路,規劃後一般可以離線導航(需下載離線地圖),連線時收你流量費,流量具體收費情況 … – Nokia 常見問題 輔助全球定位系統 (A-GPS) 可以支援流動裝置尋找衛星。 A-GPS 可以大幅提高位置計算的速度,並且讓啟動 GPS 功能的速度加快。 差分全球定位系統(DGPS)系統。 由於不需要基站,星火 用戶可以自由地漫遊,沒有限制的範圍。
a-gps: A-GPS技術限制說明
GPS通過衛星發出的無線電信號來進行定位。 當在很差的信號條件下,例如在一座城市,這些信號可能會被許多不規則的建築物、牆壁或樹木削弱。 a-gps 在這樣的條件下,非A-GPS 導航設備可能無法快速定位,而A-GPS 系統可以通過運營商基站信息來進行快速定位。 縮短定位時間:由於利用移動網絡提供GPS輔助信息,不需要移動終端通過接收GPS衛星廣播數據。
- 差分全球定位系統(DGPS)系統。
- 該技術需要在手機內增加GPS接收機模塊,並改造手機天線,同時要在移動網絡上加建位置服務器、差分GPS基準站等設備。
- 而AGPS開始首次定位的時間最快僅需幾秒鐘的時間,這也是相比傳統GPS的最大優勢。
- 在室外等空曠地區,其精度在正常的GPS工作環境下,可達10米左右,堪稱目前定位精度較高的一種定位技術。
- 這些變動可能會影響話機AGPS功能的效能。
- AGPS定位服務器可將定位結果提供給後臺的SP/SI,SP/SI可在此基礎上開發多種多樣的與用戶位置相關的業務和應用。
即使在這種情況下可計算出位置信息,但所需的時間會比平常長,而估算的位置亦可能不夠準確。 以慢速行走或駕駛亦可能會大幅降低AGPS的效能。 導航王算是我目前在iPhone上第一個購買的軟體,因為我的車上一直都沒有導航系統,很想買一臺來試試看,不過好一點的導航都要好幾張小朋友,以我出遊的頻率來說真是有… GPS衛星定位系統入門 1、前言 本 …
a-gps: A-GPS技術原理介紹
中國移動正在制訂的A-GPS方案基於OMA的SUPL規範,是一種用戶平面的解決方案;中國聯通提供的gpsOne是MS-Assisted方式的A-GPS定位方案,也基於用戶平面方式,目前只用於CDMA網絡。 A-GPS(Assisted GPS)即輔助GPS技術,它可以提高 GPS 衛星定位系統的性能。 通過移動通信運營基站它可以快速地定位,廣泛用於含有GPS功能的手機上。
一 樣 的 話 ﹐ 恐 怕 GPS 是 最 佳 的 選 擇 了 。 已 滿 足 大 部 份 民 間 定 位 作 業 的 需 求 。 但 如 果 某 些 定 位 作 業 需 要 更 高 的 精 確 度 , 也 可 以 利 用 差 分 定位 法 (Differential GPS,DGPS … 只要有AGPS功能的手機都兼具普通GPS功能,因爲AGPS功能只是對普通GPS的一個輔助罷了,沒有了GPS功能這個輔助就無從談起了。 比價網幫你在網路購物 拍賣網 找到鞋包配飾,服飾,傢俱,電腦,衣服 最低的價格 最好的商品~ 商品價格及圖案若變動以各原購物網站為主,圖檔來自各購物中心,如有侵權之處煩請聯絡我們修正或移除.
a-gps: a gps 收費
該技術需要在手機內增加GPS接收機模塊,並改造手機天線,同時要在移動網絡上加建位置服務器、差分GPS基準站等設備。 如果要提高該方案在室內等GPS信號屏蔽地區的定位有效性,該方案還提出需要增添類似於EOTD方案中的位測量單元(LMU)。 測量結束後,終端可自行計算位置結果或者將測量結果發回到AGPS服務器,服務器進行計算並將結果發回給終端。 同時後臺SP可獲取位置信息爲其它服務應用。 a-gps2025 A-GPS定位技術的主要功能是能夠爲終端用戶提供高精度的位置信息。 目前,國內移動通信市場日益發展,特別是隨着3G商用的臨近,中國移動和中國聯通都制訂和推出了各自的A-GPS方案。
如果你有包月流量,倒也無所謂。 如果只用集成方法,沒有任何費用。 A-GPS就是利用移動基站提供的位置信息,幫助機身內置的GPS芯片的設備快速定位。 傳統GPS首次定位(冷啓動)一般需要幾分鐘的時間,並且普遍受到所處定位環境的影響,例如高樓林立會嚴重阻礙衛星信號的接受,同樣在室內由於牆體的屏蔽作用GPS信號也難以接收。 而AGPS開始首次定位的時間最快僅需幾秒鐘的時間,這也是相比傳統GPS的最大優勢。
a-gps: A-GPS技術使用方法
諾基亞的Here Maps是完全免費的一款地圖定位導航軟件。 諾基亞Here最強大之處在於,在率先支持諾基亞Lumia(非凡)、貝拉、新趣系列以及諾基亞N9的基礎上,還支持包括蘋果iOS設備、谷歌Android終端、甚至是適用於Firefox OS的web應用和部分可穿戴設備。 AGPS連線費用迷思大公開◎ 使用AGPS必須連線到遠端伺服器取得衛星資料,惟連線僅會發生在每次啟動導航軟體之初,並在取得衛星位置後立即斷線。 2011年5月4日 — 請問使用S-8500大大們在使用A-GPS衛星導行時是靠3G系統來收費的嗎? a-gps 使用AGPS的時候由於要連接GPRS網絡來下載星曆資料,會發生GPRS流量費。
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” width=”609px” alt=”a-gps”/>
美國有24 顆GPS 定位衛星,這24 顆衛星涵蓋了地球表面所有的地方,提供全世界的人免費的GPS … 2013年6月20日 — 那如果我的裝置沒GPS,卻說有AGPS的功能?? 網路定位:不管你是3G、WiFi、ADSL什麼方式上網,就是可以定位。 您話機的AGPS功能使用的衛星由政府機關管理,這些機關亦會因實施的計劃而修改衛星的設定。 這些變動可能會影響話機AGPS功能的效能。 即使可取得多個衛星傳來的訊號,您的agps 功能會提供大概的位置,通常在150 呎(45 公尺),但有時會比您實際的位置遠。
a-gps: A-GPS技術技術介紹
由於衛星廣播信道速率非常低,信號強度非常弱,這個時間通常會非常長。 和純 GPS、基地臺三角定位比較,AGPS 能提供範圍更廣、更省電、速度更快的定位服務,理想誤差範圍在 10 公尺以內。 服務行動定位中心收集這些基於網路的位置數據以及來自具有幾個參考GPS接收器的A-GPS伺服器的數據,將這種輔助數據發送到行動設備,使行動設備能運算出準確的位置。 全球定位系統(Global Positioning System,GPS),是一個中距離圓型軌道衛星定位系統 … A: A-GPS是輔助衛星定位系統,是透過MiniBond內建SiRF的AGPS晶片,以及中華電信提供Cell a-gps ID輔助資訊,提供定位資訊。 由於先透過中華電信基地臺搜尋使用者的粗略位置,再利用衛星精確定位,A-GPS與傳統GPS的最大 …
- 諾基亞的Here Maps是完全免費的一款地圖定位導航軟件。
- 當在很差的信號條件下,例如在一座城市,這些信號可能會被許多不規則的建築物、牆壁或樹木削弱。
- 一 樣 的 話 ﹐ 恐 怕 GPS 是 最 佳 的 選 擇 了 。
- 雖然AGPS技術的定位精度很高、首次捕獲GPS信號時間短,但是該技術也存在着一些缺點。
- AGPS定位系統可獲得用戶的位置結果爲後臺應用服務。
- 而AGPS除了要接收衛星信號外,還要通過手機的GPRS網絡下載星曆資料,而GPRS上網是要額外花錢的。
- 目前,國內移動通信市場日益發展,特別是隨着3G商用的臨近,中國移動和中國聯通都制訂和推出了各自的A-GPS方案。
而且AGPS手機比一般手機在耗電上有一定的額外負擔,間接減短了手機的待機時間。 除此之外,就是使用有效性問題。 由於GPS系統受美國政府擁有和控制,在非常時期(如海灣戰爭、反恐戰爭等),民用GPS服務可能會受到影響,AGPS的定位業務更難以正常運作了。 目前,AGPS的方案提供商主要是美國高通公司和其子公司Snaptrack公司,現在還只能用於CDMA和iDEN網絡的市場,在不久的將來該定位技術還會用於GSM網絡。 A-GPS技術是一種結合了網絡基站信息和GPS信息對移動臺進行定位的技術,可以在GSM/GPRS、WCDMA、CDMA2000和TD-SCDMA網絡中使用。