Use PrecompileTools to precompile Acquisition.jl

[minecraft2048]

We precompile common signal formats, such as ComplexF32, ComplexF64, Int16, Float32 to reduce time to first acquisition

[zsoerenm]

Thanks for looking into this!
I have some comments, but otherwise looks good.
I haven't tested the code below. Could you test that? ;)

[zsoerenm]

I've actually never tested acquisition with real valued data. Does that actually work?
If yes, I think we should add automatic test first. Otherwise just remove those.

[minecraft2048]

I've seen it work with Int8 and Int16 IF data from NordNav frontend, CYGNSS and TDS-1 missions.
It need to be at an intermediate frequency of course, you can't have real-valued baseband / zero-IF signal

The downconvert! function will promote any non-ComplexF32 data into ComplexF32 though

Will add the tests

[zsoerenm]

Here the same as in my previous comment. There isn't an automatic test for Int8. So either remove that or add an automatic test?

[zsoerenm]

I think it is fine if we just hard code the number of samples to something like a 1000:

Suggested change

	data_ci16 = rand(Complex{Int16},Int(round(rate*0.01)))
	data_cf32 = rand(Complex{Float32},Int(round(rate*0.01)))
	data_cf64 = rand(Complex{Float64},Int(round(rate*0.01)))
	signal_types = (Int16, Float32, Float64)
	signals = map(T -> rand(Complex{T}, 1000), signal_types)

We probably also need different sample_rates types, interm_freq types and max_doppler types

samplerates = (10000Hz, 10000.0Hz, 1000u"kHz", 1000.0u"kHz", 10u"MHz", 10.0u"MHz")
interm_freqs = (100Hz, 100.0Hz, 100u"kHz", 100.0u"kHz", 1u"MHz", 1.0u"MHz")
max_dopplers = (1000Hz, 1000.0Hz, 1u"kHz", 1.0u"kHz")

The GPSL1 should be initialized before @compile_workload because it isn't part of Acquisition.jl .

systems = (GPSL1(), GPSL5(), GalileoE1B())

[zsoerenm]

Suggested change

	samplerate = rate*Hz
	acquire(GPSL1(),data_ci8[1:2048], samplerate, 1:32; interm_freq=0*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_ci16[1:2048], samplerate, 1:32; interm_freq=0*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_cf32[1:2048], samplerate, 1:32; interm_freq=0*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_cf64[1:2048], samplerate, 1:32; interm_freq=0*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_i8[1:2048], samplerate, 1:32; interm_freq=10*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_i16[1:2048], samplerate, 1:32; interm_freq=10*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_f32[1:2048], samplerate, 1:32; interm_freq=10*Hz, max_doppler=10e3*Hz);
	acquire(GPSL1(),data_f64[1:2048], samplerate, 1:32; interm_freq=10*Hz, max_doppler=10e3*Hz);
	foreach(systems) do system
	foreach(signals) do signal
	foreach(samplerates) do samplerate
	foreach(interm_freqs) do interm_freq
	foreach(max_dopplers) do max_doppler
	acquire(system, signal, samplerate, 1:1; interm_freq, max_doppler)
	end
	end
	end
	end
	end

(It is enough to acquire a single satellite)

I haven't tested the code, though ;)
You can delete the comments, IMHO