CRAWDAD init/factory

Channel gain of 5.8 GHz radio band within factory environment 1 Measurement of the channel gain with the center frequency 5.8 GHz, span 1 GHz and resolution bandwidth of 1 MHz within factory environment 1.date/time of measurement start: 2015-09-02date/time of measurement end: 2015-11-25collection environment: We measured the channel gain within a factory environment between one transmitting antenna and multiple receiving antennas.network configuration: Each antenna was mounted on tripods. Lambda/2 dipole antennas were used.data collection methodology: The vector network analyzer (VNA) Rohde and Schwarz ZVB-8 was used to measure the forward transmission coefficients (channel gain). The forward transmission coefficients were measured simultaneously.sanitization: The measured channel gain doesn't contain any privacy-related information.change: Traces M2 and M3 added.Tracesetfactory1-channel-gainChannel gain of 5.8 GHz radio band within factory environment 1file: init-factory.tar.gzdescription: Measurement of the channel gain with the center frequency 5.8 GHz, span 1 GHz and resolution bandwidth of 1 MHz within factory environment 1.measurement purpose: Bit Error Characterization, MAC Protocol Developmentfactory1-channel-gain Tracesfactory1-channel-gain/M1: Time-invariant and frequency-variant 5.8 GHz channel gain within a factory environment. The trace contains a ZIP-archive of CSV measurement files, measurement setup figure and antenna view figures. The VNA performed a single sweep. Note that this file was named channel-gain-M1.zip in the 2015-09-18 version of this dataset.file: channel-gain-M1.zipconfiguration: The line-of-sight was obstructet (O-LOS) for the antenna separations of 3.1 m, 9.2 m and 20.5 m due to industrial machineries and tools. There was no motion during the measurements. The antennas are vertical aligned. The TOSM calibration was performed to eliminate the error due to the cables and adapters.format: The forward transmission coefficients values are stored in CSV files as floats with three headlines. The three columns represent the frequency in Hz, the magnitude in dB and the angle in degree of the transmission coefficient trace point, respectivly. So, measurement file of s_21 starts with: # Version 1.00 # freq[Hz];db:Trc1_S21;ang:Trc1_S21; 5.300000000000000E 009;-5.779730205623061E 001;8.480955521472387E 001; 5.301000000000000E 009;-6.193244959783340E 001;5.826833065447170E 001; ...factory1-channel-gain/M2: Time-variant and frequency-variant 5.8 GHz channel gain within a factory environment with pedestrian movement. The trace contains a ZIP-archive of CSV measurement files, measurement setup figure and antenna view figures. The VNA performed 200 sweeps.file: channel-gain-M2-timevariant-pedestrian.zipconfiguration: The line-of-sight was obstructet (O-LOS) for the antenna separations of 3.1 m, 10.0 m and 20.4 m due to industrial machineries and tools. There was pedestrian motion during the measurements along the green path in the measurement setup figure for the time interval 4 s ... 12 s. The antennas are aligned vertically. Normalization was performed to eliminate the error due to the cables and adapters.format: The forward transmission coefficients values of 200 measurement sweeps are stored in CSV files as floats with one headline. The first column represent the frequency in Hz. The next 200 columns store the magnitude in dB and the final 200 columns angle in degree. Example: freq_Hz,mag_dBm_ 1,mag_dBm_ 2, ..., mag_dBm_200,angle_degree_ 1,angle_degree_ 2, ..., angle_degree_200 5300000000,-52.13,-52.81, ... -54.10,-86.78,-93.13, ...,-89.77 5301000000, ... ... The 200 sweeps are measured consecutively. The duration of the equidistant measurement sweeps is 85.085 ms.

工厂环境1内5.8 GHz无线电频段的信道增益
本数据集针对工厂环境1内的信道增益开展测量，中心频率为5.8 GHz，扫频跨度1 GHz，分辨率带宽1 MHz。
测量起始时间：2015-09-02；测量结束时间：2015-11-25
采集环境：在工厂环境内，于单发射天线与多接收天线之间完成信道增益测量。
网络配置：所有天线均安装于三脚架上，采用半波长（Lambda/2）偶极天线。
数据采集方法：采用罗德与施瓦茨ZVB-8型矢量网络分析仪（vector network analyzer, VNA）测量正向传输系数（即信道增益），并同步采集正向传输系数数据。
数据脱敏：所测得的信道增益不包含任何隐私相关信息。
更新说明：新增轨迹M2与M3。

## 轨迹集factory1-channel-gain：工厂环境1内5.8 GHz无线电频段的信道增益
文件：init-factory.tar.gz
描述：针对工厂环境1内的信道增益开展测量，中心频率为5.8 GHz，扫频跨度1 GHz，分辨率带宽1 MHz。
测量用途：误码特性表征、媒体接入控制（Media Access Control, MAC）协议开发
factory1-channel-gain 轨迹集

### factory1-channel-gain/M1
时不变且频变的工厂环境内5.8 GHz信道增益数据。该轨迹包含CSV格式测量文件、测量装置示意图与天线视角示意图的ZIP压缩包。矢量网络分析仪仅执行单次扫频。需注意，在本数据集2015-09-18版本中，该文件命名为channel-gain-M1.zip。
文件：channel-gain-M1.zip
配置：天线间距分别为3.1 m、9.2 m与20.5 m时，视距链路因工业机械设备及工具被遮挡（Obstructed Line-of-Sight, O-LOS）。测量过程中无物体移动，天线垂直对齐。通过TOSM校准消除线缆与适配器引入的测量误差。
格式：正向传输系数以浮点型存储于CSV文件中，文件包含三行表头。三列分别对应传输系数采样点的频率（单位：Hz）、幅度（单位：dB）与相位角（单位：°）。以s_21测量文件为例，其开头内容如下：
# Version 1.00 # freq[Hz];db:Trc1_S21;ang:Trc1_S21; 5.300000000000000E+009;-57.79730205623061;84.80955521472387; 5.301000000000000E+009;-61.93244959783340;58.26833065447170; ...

### factory1-channel-gain/M2
工厂环境内存在行人移动时的时变且频变的5.8 GHz信道增益数据。该轨迹包含CSV格式测量文件、测量装置示意图与天线视角示意图的ZIP压缩包。矢量网络分析仪共执行200次扫频。
文件：channel-gain-M2-timevariant-pedestrian.zip
配置：天线间距分别为3.1 m、10.0 m与20.4 m时，视距链路因工业机械设备及工具被遮挡（O-LOS）。测量过程中，在4 s至12 s的时间区间内，有行人沿测量装置示意图中的绿色路径移动。天线垂直对齐，通过归一化处理消除线缆与适配器引入的测量误差。
格式：200次测量扫频得到的正向传输系数以浮点型存储于CSV文件中，文件仅含一行表头。第一列为频率（单位：Hz），后续200列为幅度（单位：dB），最后200列为相位角（单位：°）。示例如下：
freq_Hz,mag_dBm_1,mag_dBm_2,…,mag_dBm_200,angle_degree_1,angle_degree_2,…,angle_degree_200
5300000000,-52.13,-52.81,…,-54.10,-86.78,-93.13,…,-89.77
5301000000,…
…
200次扫频连续进行，等间隔测量扫频的持续时长为85.085 ms。