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СН-4706М GNSS导航授时模块

CH-4706M是传统产品CH-4706的替代型号,原有CH-4706用户可以轻松迁移到CH-4706M。CH-4706M采用最新技术,专为导航系统、授时系统设计的32通道GNSS接收模块。它通过接收GLONASS、GPS和SBAS导航卫星系统的信号推算,确定它的位置坐标(经度,纬度和高度),速度和时间。CH-4706MCH-4706M

主要特点
CH-4706M小尺寸(35x35x4.5mm)和表面贴装封装,省去了高、低频连接器,方便、降低设计复杂性和减少成本。
专为在以下场合使用:
- 汽车防盗系统
- 车辆跟踪系统
- 个人导航设备
- 导航系统
- 移动网络基站
-  WiFi,WiMAX,LTE和其他无线宽带系统
- 其他通讯设备
说明
CH 4706M接收功能
CH-4706M applicationsCH-4706M applications- 接收和处理GLONASS,北斗,GPS和SBAS(EGNOS / WAAS / MSAS)CT和C / A码(民用信号)
- 自动提供和连续计算的坐标(经度,纬度和海拔高度),时间,速度和航向
- 以各种大地坐标系统格式发送当前坐标(WGS - 84,PZ - 90,SK - 42,SK - 95)
- 以1,2,5或10Hz的更新率提供定位坐标数据
- 提供导航数据估算精度

- 接收,存储和更新GLONASS,GPS和SBAS星历数据
- 与外部系统通信遵循NMEA 0183(IEC 1162)和BINR(专有的二进制协议)通信协议
- 接收和登记差分修正数据遵循RTCM SC - 104标准
- 通过SPI接口与外部设备进行通信
- 向外部设备生成输入/输出信号
- 用户界面可配置I / O
- 生成时间标记信号
GNSS信号
•通道数:32
•收星模式:全部可视
•GPS /伽利略/ SBAS:L1 1575.42 MHz
•格洛纳斯:L1 1597.5-1609.5兆赫
导航功能
•精度(RMS)*
    - 2.5米水平的自主模式
    - 差分模式1米
    - 高度3米
    - 速度0.05米/秒
    - 时间(1PPS)± 15纳秒
•首次定位时间*:
    - 重捕获<1秒
    - 热启动<3秒
    - 冷启动与温启动30秒
•灵敏度:
    - 追踪及重新定位-160 dBm
    - 冷启动-143 dBm
•支持:
    - 动态速度500米/秒
    - 加速度5g
    - 海拔18000米 (可解除18000米限制)
• 大地坐标系统:WGS - 84,PZ - 90 SK - 42,SK - 95
*典型值
RF功能
•内置的低噪声放大器(程控省电)
•两个射频前端:一个为GPS /伽利略/北斗/ SBAS L1,另一为格洛纳斯L1
•有源天线型
•26 MHz的TCXO内部时钟
推荐有源天线GPS / GLONASS L1, 35MHz带宽,20dB增益,NF2分贝,衰减35分贝@ FC ± 70MHz
环境数据
•工作温度-40至+85 ° C
•最大工作湿度98%@ 40 °С
数据接口
•数据更新/输出率1,2,5,10赫兹
•TTTF模式(1-60)-1的数据输出速率
•支持的协议
    - IEC 1162(NMEA 0183)
    - BINR(专有)
    - RTCM SC - 104 V2.2
•主机的数据接口:
    - 2个RS - 232 I / O端口(1.8至3.3V CMOS电平)
    - 1PPS输出(CMOS电平)
•数据交换速率高达230,400比特/秒
方框图
  电源
•电源电压3.0至5.5V
•数字I / O电压水平1.8至3.3V
•备用电源1.2V,4μA
•功耗
    - 仅GPS模式:1S * 18毫瓦
    - GNSS模式:1S * 24毫瓦
    - 仅GPS跟踪及导航模式* <120毫瓦
    - GNSS跟踪和导航模式* <180毫瓦
*平均值

 

СН-4706М GNSS receiver module

The CH-4706M receiver module is a drop-in-place substitute for the CH-4706 legacy product. The CH-4706M is specially developed to enable CH-4706 legacy product users to easily migrate to the new receiver.

The CH-4706M is a compact 32 channel GNSS receiver, designed for various navigation and timing systems. It determines the coordinates of its location (latitude, longitude and height), velocity and time by extrapolating signals from the GLONASS, GPS and SBAS navigation satellite systems.

Key Features:

The CH-4706M’s small form factor and surface mount package eliminates the use of high and low-frequency connectors, providing convenience, and reducing design complexity and cost.

Designed for use in the following applications:

- Car antitheft systems

- Traffic tracking systems

- Personal navigation devices

- Navigation systems

- Mobile network base-stations

- WiFi, WiMAX, LTE and others wireless broadband systems

- Other communication equipment

Description:

• CH‑4706M Receiver Functions:

- Receive and process GLONASS,BDS, GPS and SBAS (EGNOS/WAAS/MSAS) CT and C/A codes (civilian signals)

- Provide automatic and continuous calculations of coordinates (latitude, longitude and altitude), time, velocity and heading

- Send current coordinates in various geodetic reference system formats (WGS-84, PZ-90, SK-42, SK-95)

- Provide location coordinates at 1, 2, 5 or 10Hz update rates

- Provide estimated accuracy of measured navigation parameters

- Receive, store and update GLONASS, GPS and SBAS almanac data

- Communicate with external systems using NMEA 0183 (IEC 1162) and BINR (proprietary binary) protocols

- Receive and register correctional data to RTCM SC-104 standard

- Communicate with external devices via its SPI interface

- Produce input/output signals for external equipment

- Implement user-interface by means of configurable I/Os

- Generate time stamped signals

- Group delay calibrated raw data (Carrier phase, Code phase & Doppler) output

- Dead-Reckoning

GNSS signals:
• Number of channels: 32 
• Satellite access mode: All-in-view 
• GPS/GALILEO/SBAS: L1 1575.42 MHz 
• GLONASS: L1 1597.5-1609.5 MHz

Navigation Features:

• Accuracy (RMS)* 
   - horizontal autonomous mode 2.5 m  
   - differential mode 1 m  
   - height 3 m  
   - velocities 0.05 m/s  
   - time (1PPS) ±15 ns

• Time to First Fix*:
   - reacquisition <1 s
   - hot start <3 s
   - cold & warm start 30 s
• Sensitivity:
   - tracking and reacquisition –160 dBm
   - cold start –143 dBm
• Supported:
   - vehicle dynamics velocity 500 m/s
   - acceleration 5g
   - altitude 18000 m
•Geodetic reference systems: WGS-84, PZ-90 SK-42, SK-95  
* typical values

RF functionality:
• LNA Built-In (SW controlled for power saving)

• Two RF Front-end chains: one for GPS/GALILEO/COMPASS/SBAS L1 & one for GLONASS L1

• Active antenna type

• 26 MHz TCXO internal clock

Recommended active antenna: GPS\GLONASS L1, 35MHz Bandwidth, 20dB Gain, NF 2dB, Attenuation 35dB @ fc±70MHz  

Environmental data:

• Operating temperature –40 to +85°C 

• Maximum operating humidity 98% @ 40°С 

Data Interface:

• Data update/output rate 1, 2, 5, 10 Hz 
• Data output rate in TTTF mode (1-60 s)-1 
• Supported protocols
   - IEC 1162 (NMEA 0183)
   - BINR (proprietary)
   - RTCM SC-104 v2.2
• Host data interface:
   - 2x RS-232 I/O ports (1.8 to 3.3V CMOS levels)
   - 1PPS output (CMOS levels)
• Data exchange rate up to 230’400 bit/s 

Block diagram:
  Power supply:
• Power supply voltage 3.0 to 5.5V  
• Digital I/O voltage level 1.8 to 3.3V  
• Backup supply 1.2V, 4 µA 
• Power consumption 
   - GPS only time-to-time fix mode @ 1s* 18 mW  
   - GNSS time-to-time fix mode @ 1s* 24 mW  
   - GPS only tracking & navigation mode* < 120 mW  
   - GNSS tracking & navigation mode*   < 180 mW  

* average values