IFR GPS-101 GPS衛(wèi)星類比信號發(fā)生器
校驗所裝載的寰球衛(wèi)星定位系統(tǒng)（GPS）的工作
迅速校驗GPS領受機操作破碎性
可選衛(wèi)星裝載器（SV）和導航（NAV）資料
RF電平可調規(guī)模在-85dBm - -145dBm內，以1dB距離調節(jié)
多普勒頻移節(jié)制可使操作者選擇一個大約%26plusmn;4kHz的載波頻移
用實不時鐘存儲GPS星曆時鐘存儲GPS星歷
間接或經(jīng)天線耦合器連貫領受機
便攜式電池操作
IFR GPS-101寰球定位系統(tǒng)模擬器對寰球定位系統(tǒng)（GPS）供給切確和陸續(xù)的測試。GPS-101模擬一個寰球定位衛(wèi)星并出產一個特定衛(wèi)星載體（SV）和導航數(shù)據(jù)模子來實現(xiàn)這項測試。連同遠程載入GPS年歷信息和RF電平/頻率節(jié)制，GPS-101對驗證GPS系統(tǒng)供給一個便攜的測試解決方案。
GPS-101可校驗以下類型的行動措施：
一個破碎的GPS領受機%26mdash;%26mdash;帶天線系統(tǒng)（比如一個手持組件），內置測試模式，經(jīng)由過程領受特定衛(wèi)星裝載器（SV）編號和導航數(shù)據(jù)字能發(fā)生顯示，或能夠領受到信息而且顯示。
帶外接天線系統(tǒng)的機載GPS領受機。
任何GPS領受機或安裝，存在顯示單個衛(wèi)星以及所探測到導航數(shù)據(jù)的能力。
操作 GPS-101前面板上的專用鍵用于所有的首要性能的選擇。選擇的參數(shù)顯示在一個寬視角、高對比度、有背景燈的液晶顯示屏上。
模式鍵
RFLVL：射頻電平可由旋鈕調節(jié)，規(guī)模-85dBm到-145dBm,步幅為1dB,有以校驗GPS。
DPLR：多普勒節(jié)制可使操作者選擇一個大約為%26plusmn;4kHz的載波頻移來驗證領受機探測和鎖定機能。
SV：選擇模擬1-37號衛(wèi)星。假如衛(wèi)星不正?；蛴行?，在選擇的衛(wèi)星號數(shù)邊上年歷數(shù)據(jù)顯示*號。
RF CONT：RF節(jié)制為1575.42MHz信號發(fā)生器選擇調制源。選擇RF OFF，載波關閉；選擇RF CW，為C/A碼和NAV數(shù)據(jù)（擴頻信號）；RF EXT，為外部BPSK調制經(jīng)由過程AUXI/O連貫；RF SQR，為511.5kHz方波調制（保護用）。
SET UP：設定RS-232/422通信端口參數(shù)、設置測試特征和自檢。
TEST：選擇三個存儲的NAV數(shù)據(jù)模子的一個。（此外保存三個數(shù)據(jù)模子以供未來利用）
T1：NAV數(shù)據(jù)包括可編程年歷信息和GPS周數(shù)和時候。年歷數(shù)據(jù)30天周期內有效，可由RS-232端口以%26quot;YUMA%26quot;ASCII碼文本款式下載。現(xiàn)行年歷數(shù)據(jù)從U.S.海岸保鑣互聯(lián)網(wǎng)站獲得。GPS-101有一個內部實不時鐘保存UTC時候，可由利用者編程。
T2：NAV數(shù)據(jù)模子包括固定的GPS周數(shù)和時候。
T3：固定的*... 反復測試信號。
選擇鍵：挪動光標選擇字段/參數(shù)。
顯示鍵：對比度設置鍵和顯示屏背光燈開/要害。
ESC鍵：回到主操作屏。
旋鈕：可迅速選擇數(shù)據(jù)。
產物參數(shù)：
信號發(fā)生器
頻率 1575.42MHz
精度 同主時基
多普勒頻移 可選頻率偏移 %26plusmn;4.0kHz
偏移精度 見主振蕩器
頻道 單個SV模擬，可選擇1-37號
相位調制 BPSK
PRN碼 C/A碼= 1.023MHz 1023bit 歌德碼
NAV數(shù)據(jù) 50Hz，可編程測試模子， 內置測試模子
輸出電平 -85dBm～-145dBm/1dB步幅，精度%26plusmn;2dB，（交流耦合）50歐姆尺度電纜，4dB損耗。
干擾 〈-40dBc,在帶寬20MHz外
外部調制輸入 TTL
主振蕩器
頻率 10MHz
溫度不亂度 %26plusmn;1ppm
耦合器
在1575.42MHz典型值為-20dB
校準距離 一年
電池操作時候 360分鐘
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Signal generator of imitate of satellite of IFR GPS-101 GPS
The system of global satellite location that desired result place lades (GPS) the job
Receiver of GPS of fast desired result operates integrtes integrality
Optional satellite lades implement (SV) with navigation (NAV) data
RF n is adjustable limits is in - 85dBm comes - inside 145dBm, adjust with 1dB interval
Much general straps frequency to move control can make handlers chooses about the carrier wave frequency of ±4kHz moves
With all previous of star of GPS of memory of real time clock
Direct or receiver of join of classics antenna coupler
Portable batteries is operated
Simulator of system of location of IFR GPS-101 whole world locates to the whole world system (GPS) offer mix accurately successive test. Satellite of fixed position of a whole world produces GPS-101 imitate carrier of a specific satellite (SV) will complete this test with navigation data model. Along with is record in information of GPS single-page calendar and RF n remotely / frequency control, GPS-101 offers a portable test solution to system of GPS of test and verify.
GPS-101 but desired result is the following the equipment of the type:
A complete GPS receiver —— takes aerial system (for instance one holds package) , buy checks mode inside, lade through receiving specific satellite implement (SV) number and navigation data word can arise show, may receive information in order to receive and show.
The airborne GPS receiver of aerial system is received outside the belt.
Any GPS receiver or device, have the ability that shows single satellite and place explore navigation data.
The special key on the face plate before operating GPS-101 is used at the choice of all main functions. The parameter of the choice shows in wide perspective, tall contrast, have powerful connections the liquid crystal of the lamp shows screen to go up.
Mode key
RFLVL: Radio frequency n can be adjusted by knob, limits - 85dBm arrives - 145dBm, step is 1dB, have with desired result GPS.
DPLR: The receiver of test and verify of immigrate of carrier wave frequency that much general straps control to be able to make handlers choice is ±4kHz about is explored and lock up calm function.
SV: Choose satellite of imitate 1-37 date. If abnormal or the satellite is invalid, the satellitic name that choosing counts data of the single-page calendar on the edge to show * sign.
RF CONT: RF control chooses modulation source for 1575.42MHz signal generator. Choose RF OFF, carrier wave is shut; Choose RF CW, for C/A code and NAV data (enlarge frequency signal) ; RF EXT, pass AUXI/O join for exterior BPSK modulation; RF SQR, for modulation of 511.5kHz square wave (safeguard with) .
SET UP: Parameter of port of set RS-232/422 communication, setting checks character and self check.
TEST: A of the NAV data model that chooses 3 memory. (withhold 3 data model to be used in order to offer in the future additionally)
T1: NAV data includes but information of process designing single-page calendar and GPS Zhou Shu and time. Single-page calendar data inside 30 days of cycle effective, can pile up text format download with "YUMA" ASCII by RS-232 port. Data of active single-page calendar from U.S. Coastal guard website gets. GPS-101 has time of UTC of the Zhong Baocun when an in-house real time, but by process designing of the person that use.
T2: NAV data model includes fixed GPS Zhou Shu and time.
T3: * fixed. . . Retest signal.
Choose key: Mobile cursor chooses a field / parameter.
Indication key: Contrast setting key is in a poor light with indication screen the lamp leaves / crucial.
ESC key: Return advocate operation screen.
Knob: Can choose data quickly.
Product parameter:
Signal generator
Frequency 1575.42MHz
Precision is the same as advocate time base
Much general straps frequency to move ±4.0kHz of optional frequency deflection
Deflection precision sees advocate oscillator
Channel is individual SV imitate, can choose 1-37 name
Phasic modulation BPSK
PRN piles up C/A to pile up code of heart of song f = 1.023MHz 1023bit
NAV data 50Hz, but process designing tests a model, buy tests a model inside
Output n - 85dBm ～ - 145dBm/1dB step, precision ±2dB, (communicate coupling) cable of 50 ohmic standards, 4dB loss.
Disturb < - 40dBc, outside bandwidth 20MHz
Exterior modulation inputs TTL
Advocate oscillator
Frequency 10MHz
Temperature stability ±1ppm
Coupler
In 1575.42MHz model the value is - 20dB
Calibration is removed one year
Batteries handles time 360 minutes
