CNRDIFF
A library used to compare signal-to-noise ratio.（卫星载噪比差值比较）
依赖项
- pyrtcm
- pandas
使用方法
计算 SN04 和 SN02 测站相对于 SN01 测站的载噪比差值
cnrdiff SN01001a.24O SN02001a.24O SN04001a.24O
自定义参数
基于卫星系统计算载噪比差值 b - a，并将输出保存到文件里
cnrdiff --ftype RTCM3_MSM4 a.bin b.bin --by-sys > result.txt
平均值算法
基本假设
- 各测站观测数据正常记录，无历元缺失，无事件干扰
- 各测站观测数据时间同步，起止时间尽量一致
- 各测站观测数据历元间隔不超过 1s，实际按 1s 间隔处理
基于卫星号（默认）
运行过程中所产生的 CNR 二进制文件是一个 SQLite 数据库文件，存储逐一历元逐一卫星逐一频点下的载噪比
- 先对各卫星全历元求各频点平均，得到以卫星号和频点作为行列的数据表
- 再对各测站数据表进行对齐后做差，得到以卫星号+频点和测站（数据文件名）作为行列的数据表
基于卫星系统
从卫星号中提取卫星系统，作为新的维度
- 先对各卫星系统全卫星全历元求各频点平均（等价于各卫星根据历元数加权平均），得到以卫星系统和频点作为行列的数据表
- 再对各测站数据表进行对齐后做差，得到以卫星系统+频点和测站（数据文件名）作为行列的数据表
许可证
MIT
作者及贡献名单
Lead Programmer: Sheng Guoliang shengguoliang@sinognss.com
Contributors:
- Yang Fawang yangfawang@sinognss.com
1 maintainer
Metadata
1 maintainer
Release files for cnrdiff 2.1.2
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| cnrdiff-2.1.2.tar.gz | 6.3 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| cnrdiff-2.1.2-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 13.1 kB
Release files / cnrdiff-2.1.2.tar.gz
| Download URL | cnrdiff-2.1.2.tar.gz |
|---|---|
| Size | 6.3 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
b5cec51bd8e0077ac636c75adf82711e1fdfa43c2bb55c6017b07da956635cd6
|
|
BLAKE2b-256 checksum How to use checksums |
492156f6395eb553f101807d76f5dc2476820d9d37976e3975b76b8f586ea27c
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 25, 2026.
Transparency logRelease files / cnrdiff-2.1.2-py3-none-any.whl
| Download URL | cnrdiff-2.1.2-py3-none-any.whl |
|---|---|
| Size | 6.8 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
0cb5a824944652747dde1fb76c8741463d130fc7fb90cc561784f994fd198130
|
|
BLAKE2b-256 checksum How to use checksums |
0b7232ac0546a2ca772942135359f72f4762bcda4278e08b8211693bd4ea20cf
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 25, 2026.
Transparency log
