Each level, no matter how great and complex the tasks it addresses, masks complexities that must ultimately be resolved on the chip by exploiting the tremendous processing clock-rates to accomplish hugely complex procedures.
In standard GNSS processing, the clock is directly estimated at each epoch.
Due to stream modifications performed during TS processing, Program Clock Reference (PCR) correction is implemented to guarantee receiver synchronization.
The basic FLPA approach is based on the separation of the processor architecture into functional blocks like, e.g. processing unit, clock network, internal memory, etc.
The characteristic jump in post-processing wall clock time when going from 512 to 1,024 processes running Gimlet is due to the slowdown of FFTW when decreasing the number of x-y chunks from 2 per process to 1. (In Figure 9 the jump occurred when going from 256 to 512 processes).
For example, on a single DSP56001 digital signal-processing chip, clocked at 33 MHz, only about sinusoidal partials can be synthesized in real time using non-interpolated, table-lookup oscillators.
In some cases, high-level languages did not give programmers the level of control they desired to manipulate machine internals, while in other cases, given the central processing unit (CPU) clock speeds of that time, certain things happened too slowly unless they were done in assembly language.
If this advanced reliability method is further combined with parallel processing, the wall clock time decreases remarkably to t LS, seq ≈ 1.9 h, leading to a similar speed-up as for the determination of the gradient.
It should come as no surprise that the maker of Memento and Inception – two masterpieces of watchmaker cinema – should have wound up at the door of Albert Einstein, who deduced the postulates of relativity while processing patents for clocks at a Bern patent office.
This speed amounts to 18.8 MHz clocks processing 15 frames in 1 s.
