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WIP: Port tracking loops for L2C #618

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WIP: Port tracking loops for L2C #618

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dt-unikie
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This ports tracking loop for L2CM from Peregrine

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This should be merged first: https://github.com/swift-nav/libswiftnav/pull/308

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@adel-mamin Please, review.

"(1 ms, (1, 0.7, 1, 1540), (50, 0.7, 1, 5))," \
"(2 ms, (1, 0.7, 1, 1540), (100, 0.7, 1, 0))"

#define GPS_L2C_LOOP_PARAMS_MED \
"(20 ms, (1, 0.7, 1, 120), (13, 0.7, 1, 5))" /* Just 1 stage for L2C */

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120 -> 1200. It is L2/L2C chip rate = 1.22760e9 / 1.023e6 = 1200

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Looks good to me.

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@ljbade @cbeighley @jacobmcnamee Could you please take a look at this? My concerns about line 51. Did I compose loop init string correctly? I'm wondering if I set integration time correctly? Is one stage enough?

Dmitry Tatarinov added 2 commits March 21, 2016 11:03
L2CM tracking using new framework.
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Note: This PR also requires to be merged following:
#630 -- NDB
#606 -- L2C capability monitor

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