telemetry-analysis

Development

TelemetryAnalysis.jl providing an API framework for satellite telemetry packet processing. Use when fetching, unpacking, or processing satellite telemetry data, defining transfer functions, or building telemetry databases.

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TelemetryAnalysis.jl

API framework for satellite telemetry processing. Repo: JuliaSpace/TelemetryAnalysis.jl

Key Types

TelemetrySource -- Abstract type for telemetry data sources (subtype to implement)
TelemetryPacket -- Container for a raw telemetry packet
TelemetryDatabase -- Variable definitions, transfer functions, and dependencies

API Pattern

# Initialize a telemetry source
source = init_telemetry_source(MySource, args...)

# Fetch packets in a time range
packets = get_telemetry(source, start_time, end_time)

# Create a telemetry database
db = create_telemetry_database(:my_label;
    get_telemetry_timestamp=ts_func,
    unpack_telemetry=unpack_func)

# Register variables with transfer function pipeline
add_variable!(db, :temperature, position, size, tf;
    alias=:temp, description="Board temp", endianess=:big)

Transfer Function Pipeline

Raw Bytes -> Bit Transfer Function (btf) -> Raw Value -> Raw Transfer Function (rtf) -> Transfer Function (tf) -> Processed Value

Implementing a Source

struct MySource <: TelemetrySource ... end
TelemetryAnalysis._api_init_telemetry_source(::Type{MySource}, args...) = ...
TelemetryAnalysis._api_get_telemetry(source::MySource, t0, t1) = ...

Key Conventions

Framework package: requires companion packages for concrete implementations
Variables extracted by byte position + size + endianess
Dependencies between variables supported (chained processing)
Uses Unitful time units: d, h, m, s
DataFrames for tabular output